Objective The student will be able to: 1) write equations using slope-intercept form. 2) identify slope and y-intercept from an equation. 3) write equations.

Slides:



Advertisements
Similar presentations
Parallel & Perpendicular Slopes II
Advertisements

Objective The student will be able to:
Students will: 1) write equations using slope-intercept form (y = mx+b). 2) identify slope and y-intercept from an equation, or points. 3) interpret slope.
2.4 Write Equations of Lines
Objective The student will be able to:
Parallel and Perpendicular Lines Lesson 5.5. Alg 7.0 Derive linear equations by using the point-slope formula. Alg 8.0 Understand the concepts of parallel.
4.7 Graphing Lines Using Slope Intercept Form
Find slope and y-intercept given an equation in standard form. 5.5 day 2 3x - 6y = 12.
A surveys ask high school freshman whether they would be willing to pay $5 for their yearbooks. Out of the 225 freshman surveyed, 198 said “yes”. What.
Objective The student will be able to: 1) write equations using slope-intercept form. 2) identify slope and y-intercept from an equation. 3) write equations.
11.6 The Slope Intercept Form
Write an equation in slope-intercept form: 1. Given slope -6 and y-intercept is Given slope ⅓ and passes through (2,-1) y= -6x + 9 y+1= ⅓(x – 2)
Writing Linear Equation using slope-intercept form.
Objective The student will be able to: 1) Write equations using slope-intercept form. 2) Identify slope and y-intercept from an equation. 3) Write equations.
Write an equation given the slope and y-intercept EXAMPLE 1 Write an equation of the line shown.
Submitted to - Sh.Bharat Bhushan Sir Submitted by- Mayank Devnani
Lesson 5-3 Slope Intercept Form
Find The Equation Of The Line FTEOTL in Standard Form
Slope – Intercept Form y = mx + b m represents the slope b represents the y-intercept.
Warm-up You are driving on a road trip and you want to find out how many hours total it will take you to get to California. After driving for 4 hours,
Goal: Write a linear equation..  1. Given the equation of the line 2x – 5y = 15, solve the equation for y and identify the slope of the line.  2. What.
Lesson 3-6/3-7: More Equations of Lines (parallel and perpendicular) Objective Students will: Write equations given two points State the slope and y-intercept.
Copyright © 2015, 2011, 2007 Pearson Education, Inc. 1 1 Chapter 3 Equations and Inequalities in Two Variables; Functions.
Lesson 5.6 Point-Slope Form of the Equation of a Line.
5.1 Writing Equations in Slope Intercept Form DO NOW: 1) Identify the Slope and Y-INT: y = -3x + 5 2)Find the slope: (-2, 3) and (4, -1) 3) Which point.
Objective You will be able to: 1) write equations using slope-intercept form. 2) identify slope and y-intercept from an equation. 3) write equations in.
Point-Slope Formula Writing an Equation of a line Using the Point-Slope Formula.
Writing Equations of a Line. Various Forms of an Equation of a Line. Slope-Intercept Form.
Section 2.5 Other Equations of Lines  Point-Slope Form (y – y 1 )=m(x – x 1 )  Special pairs of lines: Parallel Lines m 1 = m 2 Perpendicular lines m.
2.4 Essential Questions What is the point-slope form?
Objective Write equations in slope-intercept form. Identify slope and y-intercept from an equation. 3.2 Slope-Intercept Form of a Linear Equation.
X and Y Intercepts.
Big Idea : -Solve systems of linear equations by graphs.
Lesson 2-3 Objective The student will be able to: 1) write equations using slope-intercept form. 2) identify slope and y-intercept from an equation.
WHAT IS NEEDED: The slope and the y-intercept. An equation consists of…. y = mx + b Slope Y-intercept.
2.4 “Writing Linear Equations” ***When writing equations of lines, substitute values for: y = mx + b Given: 1.Slope and y-intercept m = -3 b = 5 Step:
Do Now Write the slope-intercept equation of this line.
Point slope form of an equation Y - y₁ = m(X- x₁) (x₁, y₁) An ordered pair on the line m slope.
Point slope form of an equation Y - y₁ = m(X- x₁) (x₁, y₁) An ordered pair on the line m slope.
EXAMPLE 1 Identify slope and y-intercept Identify the slope and y- intercept of the line with the given equation. y = 3x x + y = 22. SOLUTION The.
4.3 – Writing Equations in Point Slope Form. Ex. 1 Write the point-slope form of an equation for a line that passes through (-1,5) with slope -3.
Writing Equations of Lines
Objective The student will be able to: 1) write equations using slope-intercept form. 2) identify slope and y-intercept from an equation. SOL: A.6b.
Objective The student will be able to: solve systems of equations using elimination with addition and subtraction. SOL: A.4e Designed by Skip Tyler, Varina.
Slope Intercept. Slope – Intercept Form y = mx + b *m represents the slope *b represents the y-intercept (where your line will cross over the y-axis)
Objective The student will be able to: 1) write equations using slope-intercept form. 2) identify slope and y-intercept from an equation. Designed by Skip.
 An equation of a line can be written in slope- intercept form y = mx + b where m is the slope and b is the y- intercept.  The y-intercept is where.
Algebra 1 ~ Sections 5-4 & 5-5 & Standard Form Writing Equations of Lines in Point-Slope Form, Slope-Intercept Form, and Standard Form.
Objective You will be able to: 1) write equations using slope-intercept form. 2) identify slope and y-intercept from an equation.
 Slope-Intercept Form:  y = mx + b  where m is the slope and b is the y-intercept.  How do you know you have b? Either you will see b = ??, or you.
Writing Linear Equations in Slope Intercept Form Goals: Write linear equations given 2 points. Decide which form of a line to use given initial information.
How to Write an Equation of a Line Given TWO points
Distance Learning Mini Lesson
Slope-Intercept Form 8th Grade Math Standard 8.F.3
Objective The student will be able to:
Chapter 1: Lesson 1.3 Slope-Intercept Form of a Line
Objective The student will be able to:
Objective The student will be able to:
SWBAT write linear equations in Slope-Intercept Form
Algebra I Mrs. Long Adapated from
Objective The student will be able to:
Objective The student will be able to:
Essential Question: How do we write equations using slope-intercept form. How can we identify slope and y-intercept from an equation. How can we write.
Objective The student will be able to:
Objective The student will be able to:
Objective The student will be able to:
Objective The student will be able to:
Objective The student will be able to:
Objective The student will be able to:
Presentation transcript:

Objective The student will be able to: 1) write equations using slope-intercept form. 2) identify slope and y-intercept from an equation. 3) write equations in standard form. SOL: A.6b Designed by Skip Tyler, Varina High School

Important!!! This is one of the big concepts in this unit, thus you need to thoroughly understand this! Slope – Intercept Form y = mx + b m represents the slope b represents the y-intercept

Writing Equations When asked to write an equation, you need to know two things – slope (m) and y-intercept (b). There are three types of problems you will face.

Writing Equations – Type #1 Write an equation in slope-intercept form of the line that has a slope of 2 and a y-intercept of 6. To write an equation, you need two things: slope (m) = y – intercept (b) = We have both!! Plug them into slope-intercept form y = mx + b y = 2x

Write the equation of a line that has a y-intercept of -3 and a slope of y = -3x – 4 2.y = -4x – 3 3.y = -3x y = -4x + 3

Writing Equations – Type #2 Write an equation of the line that has a slope of 3 and goes through the point (2,1). To write an equation, you need two things: slope (m) = y – intercept (b) = We have to find the y-intercept!! Plug in the slope and ordered pair into y = mx + b 1 = 3(2) + b 3 ???

Writing Equations – Type #2 1 = 3(2) + b Solve the equation for b 1 = 6 + b = b To write an equation, you need two things: slope (m) = y – intercept (b) = y = 3x

Writing Equations – Type #3 Write an equation of the line that goes through the points (-2, 1) and (4, 2). To write an equation, you need two things: slope (m) = y – intercept (b) = We need both!! First, we have to find the slope. Plug the points into the slope formula. Simplify ???

Writing Equations – Type #3 Write an equation of the line that goes through the points (-2, 1) and (4, 2). To write an equation, you need two things: slope (m) = y – intercept (b) = It’s now a Type #2 problem. Pick one of the ordered pairs to plug into the equation. Which one looks easiest to use? I’m using (4, 2) because both numbers are positive. 2 = (4) + b ???

Writing Equations – Type #3 2 = (4) + b Solve the equation for b 2 = + b To write an equation, you need two things: slope (m) = y – intercept (b) =

Write an equation of the line that goes through the points (0, 1) and (1, 4). 1.y = 3x y = 3x y = -3x y = -3x + 1

To find the slope and y-intercept of an equation, write the equation in slope-intercept form: y = mx + b. Find the slope and y-intercept. 1)y = 3x – 7 y = mx + b m = 3, b = -7

Find the slope and y-intercept. 2)y = x y = mx + b y = x + 0 3)y = 5 y = mx + b y = 0x + 5 m = b = 0 m = 0 b = 5

-3 Find the slope and y-intercept. 4)5x - 3y = 6 Write it in slope-intercept form. (y = mx + b) 5x – 3y = 6 -3y = -5x + 6 y = x - 2 m = b = -2

Write it in slope-intercept form. (y = mx + b) 2y + 2 = 4x 2y = 4x - 2 y = 2x - 1 Find the slope and y-intercept. 5) 2y + 2 = 4x 222 m = 2 b = -1

Find the slope and y-intercept of y = -2x m = 2; b = 4 2.m = 4; b = 2 3.m = -2; b = 4 4.m = 4; b = -2

Write your equation in STANDARD form given m = and b = 2. First, write in slope-intercept form: y = x + 2 Now, write it in standard form. (Ax + By = C where A, B, and C are integers). Clear the fractions - multiply everything by 3. (3)y = (3)( x) + (3)2 3y = -x + 6 Get the variables on the same side. x + 3y = 6

Oh no! This is a Type #3 problem! Find slope… Find y-intercept. I’m choosing the point (-4, 6). 6 = -3(-4) + b 6 = 12 + b -6 = b Slope-intercept form: y = -3x - 6 Standard form: 3x + y = -6 Write the standard form for a line passing through the points (-1, -3) and (-4, 6).

Which of the following equations are parallel? 1.y = 3x y = 2x y = -3x y = 3x + 1

Which of the following equations are perpendicular? 1.y = 1/3x y = 3x y = -1/3x y = 1/3x -41