Math CC7/8 – Be Prepared On Desk: Pencil Calculator Math Journal

Slides:

Advertisements

Similar presentations

Writing Linear Equations Using Slope Intercept Form

Advertisements

Graphing Linear Equations By: Christine Berg Edited By: VTHamilton.

The Linear Function.

EXAMPLE 1 Write an equation of a line from a graph

2-3 Slope Slope indicates the steepness of a line.

Graph a linear equation Graph: 2x – 3y = -12 Solve for y so the equation looks like y = mx + b - 3y = -2x – 12 Subtract 2x to both sides. y = x + 4 Divide.

The equation of a line - Equation of a line - Slope - Y intercept

1 Linear Equation Jeopardy SlopeY-int Slope Intercept Form Graphs Solving Linear Equations Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400.

Write an equation given two points

Graphing Linear Equations

LEARNING TARGETS: 1. TO IDENTIFY SLOPE FROM A TABLE OF VALUES. 2. TO IDENTIFY SLOPE FROM A GRAPH. 3. TO IDENTIFY SLOPE FROM 2 POINTS. 4. TO IDENTIFY SLOPE.

Elementary Algebra A review of concepts and computational skills Chapters 3-4.

Holt McDougal Algebra Rate of Change and Slope 4-3 Rate of Change and Slope Holt Algebra 1 Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation.

Quick Start Expectations 1.Fill in planner and HWRS HW: p. 46, #5, 14, 16, 18, # Get a signature on HWRS 3.On desk: calculator, journal, HWRS, pencil,

Quick Start Expectations

On Desk: 1. Pencil 2. Math Journal 3. Learning Log 4.Last night’s HW - ? Learning Log: 1. HW: MSA p. 75, #30, 31, 34, Quiz Thurs. 12/10 3. Test Thurs.

Warm up Write the slope and y-intercept for the following linear functions 1.y = 4x – 6 2.y = -3x y = 4 – 2x 4.y = 1/3x y = -2/3x.

Copyright © 2015, 2008, 2011 Pearson Education, Inc. Section 1.4, Slide 1 Chapter 1 Linear Equations and Linear Functions.

Graphing Linear Equations 4.2 Objective 1 – Graph a linear equation using a table or a list of values Objective 2 – Graph horizontal or vertical lines.

On Desk: 1. Pencil 2. Calculator 3. Math Journal 4. Learning Log Learning Log: 1. HW: p. 19, #10d, 13 p. 38, #1, 29, 30, Learning Check – Finish?

Lesson 3-5: Slope Objectives: Students will: Find the slope of a line from 2 points Find the slope of horizontal and vertical lines Write equations for.

Some Algebra Review By: Mrs. Brown. Functions and Relations Which relation is NOT a function?

Math CC7/8 – Be Prepared On Desk: 1. Pencil 2. Calculator 3. Math Journal 4. TwMM Learning Log Learning Log: 1.HW: p. 69, #4-8 2.Parent Signatures? 3.Quiz.

0-6 Writing Equations in Point- Slope Form. Slope Formula y 1 – y 2 x 1 – x 2 Forms of lines Point-slope form: y – y 1 = m (x - x 1 )

Lesson 3.5 Essential Question: How can you describe the graph of the equation y=mx+b? `Objectives: Finding the slope of a line Finding the slope of a line.

Section 2.3 Linear Functions and Slopes

Math CC7/8 – April 19 Math Notebook: Things Needed Today (TNT):

Warm-Up 11/19 Which equation is in Standard Form? (also called general form) Convert the equations to slope-intercept form (That means solve for y) x =

Graphing Linear Equations

Ex 2: Graph the line with slope 5/2 that passes through (-1, -3)

Lesson 5.6 Point-Slope Form of the Equation of a Line

Daily Homework Quiz Review 5.3

Chapter 1 Linear Equations and Linear Functions.

Math CC7/8 – Jan. 3, 2017 Topic: Finding Slope

3.3: Point-Slope Form.

Graphing Linear Equations

Math CC7/8 – April 24 Math Notebook: Things Needed Today (TNT):

Graphing Linear Equations

On Desk: Learning Log: HW: p. 49, #20, 21, #22-25 (a only!), #43

Equations of Lines in the Coordinate Plane

X = 4 On Desk: Pencil Math Journal Learning Log Quiz & Sig.?

Turn in HW from Friday! WS: Circles

Learning Log: On Desk: HW: p.70 #4-8 TwMM Quick Quiz – tomorrow!

Learning Log: On Desk: (4, 7) and (27, 39)

Writing Linear Equations From Key Information

Lesson 1.3 Algebra 3 Objectives:

Slope = m = rate of change

On Desk: Learning Log: HW: p. 20, #1-2, 17, 18

Linear Equations & Functions

Sub Notes Today is a Partner Quiz for all periods. Before the PQ, there are 2 warm ups-have them write the table in their journal and try to solve before.

On Desk: Learning Log: CW/HW: p. 74, #27, 29-30, 40, 42a-c, 43

Writing Linear Equations Given Two Points

3.1 Reading Graphs; Linear Equations in Two Variables

Write Equations of Lines

EXAMPLE 1 Write an equation of a line from a graph

2-4: Writing Linear Equations Using Slope Intercept Form

Graphing Linear Equations

On Desk: Learning Log: HW: p. 98, #5, and SBA packet #7-11

HW: BPW p. 20 #8 and #10 (WS – ACE)

Finding the Slope of a Line

Section 3.3 The Slope of a Line.

Objective graph linear equations using slope-intercept form.

Moving Straight Ahead (MSA) On Desk:

On Desk: Pencil Calculator Math Journal Learning Log Labsheet 1.3

Work with a partner within your group.

Warm-Up #8 Solve for y: 2y – x = 4 5 – y = 6x y – 2x = 6.

4 minutes Warm-Up Graph. 5x – 4y = 20 2) x = 5 3) y = -2.

Y X Equation of Lines.

WARM UP 3 WRITING EQUATIONS Write in slope-intercept form the equation of the line that passes through the given point and has the given slope. (Lesson.

Presentation transcript:

Math CC7/8 – Be Prepared On Desk: Pencil Calculator Math Journal TwMM Learning Log Learning Log: HW: p. 46, #5, 8, 14, 16, 18, #39-42 Turn in Review WS #2

Tasks for Today Questions on Test? Mistakes are Powerful!! Warm Up – Write an equation from 2 points Finish Lesson 2.2 Lesson 2.3 – Equations for linear functions

y = 2x + -3 Warm Up What is the equation? Write an equation for the line with points (4, 5) and (6, 9) (x1,y1) (x2, y2) What tool can we use to solve for the slope? The slope algorithm! (x1,y1) (x2, y2) y2 – y1 x2 – x1 What tool can we use to solve for the y-intercept? A table! What is the equation? y = 2x + -3 X Y 9 – 5 6 – 4 0 -3 m = = 4/2 = 2 1 -1 2 1 3 3 4 5

Slope = -1 (x1,y1) (x2, y2) y2 – y1 x2 – x1 This slope is -3 which is less than the other slopes. (x1,y1) (x2, y2) y2 – y1 x2 – x1 Slope = -1

Many possible answers. (5, 1) (6, 0) You could make a table and use the slope to find many different points of the same line. Yes, they are correct, because a straight line does not change direction or steepness. The ratio of rise over run will be the same no matter what two points you choose.

Yes, he is correct! Using substitution, when x = 1, y = m times 1 = m, and when x = 0, y = m times 0 = 0 Horizontal lines have a slope = 0 (rise is always 0) Vertical lines have no slope (dividing by a run difference of 0 is impossible)

As the number in the group increases by 1, the admission cost increases by $15. Slope = 15 y-intercept = 60

y = 2.5x

Decide what the independent and dependent variables are. Find the unit rate (m, or slope). Look if the starting value (b) was given. If not, work backwards to find when x = 0.

Find the slope (m) Finding out the y-value change as x increases by 1. Use the slope algorithm Change in y divided by the change in x Find the y-intercept (b) Work backwards from the given points to point (0, b) using slope Use substitution with the slope and a given point (x, y)

Find the slope (m) Find 2 points the line passes through Use the slope algorithm Find the y-intercept (b) Work backwards from the given points to point (0, b) using slope Use substitution with the slope and a given point (x, y)

Dana’s work is correct. In general, if you know the slope of a line and a point on the line you can substitute these three values in for y, m, and x in the equation y = mx + b and solve the equation for b.

y = 2x – 3. The equation should be No, Chris has not used the coordinates of the two points correctly to find the slope. She put the differences in x on top! It should be the change in y divided by the change in x, for a slope of 2.