Variation Learning Outcomes  Write and simplify ratios.  Divide in a given ratio.  Solve problems where 2 quantities are in direct or indirect proportion.

Slides:



Advertisements
Similar presentations
1.3 Solving Equations 1.5 Solving Inequalities
Advertisements

What You Will Learn Recognize and solve direct and joint variation problems Recognize and solve inverse variation problems.
Algebra Recap Solve the following equations (i) 3x + 7 = x (ii) 3x + 1 = 5x – 13 (iii) 3(5x – 2) = 4(3x + 6) (iv) 3(2x + 1) = 2x + 11 (v) 2(x + 2)
I.1 ii.2 iii.3 iv.4 1+1=. i.1 ii.2 iii.3 iv.4 1+1=
I.1 ii.2 iii.3 iv.4 1+1=. i.1 ii.2 iii.3 iv.4 1+1=
Constant of Proportionality
Solving equations that involve formulas.
Using Cross Products Lesson 6-4. Cross Products When you have a proportion (two equal ratios), then you have equivalent cross products. Find the cross.
Variation. Direct Variation if there is some nonzero constant k such that k is called the constant of variation.
Completing the square Solving quadratic equations 1. Express the followings in completed square form and hence solve the equations x 2 + 4x – 12 = 0 (x.
Constant of Proportionality
Review for TEST #2: Topics are: 1)Rationalize the denominators. 2)Solving quadratic equations, using the quadratic formula. 3)Power of i. 4)Operations.
Algebraic Fractions and Forming Equations Learning Outcomes  Simplify algebraic fractions  Add, subtract, multiply and divide algebraic fractions  Solve.
Objectives: 1.Be able to solve a radical equation. 2.Be able to solve an equation that contains a rational exponent. Critical Vocabulary: Rational Exponents,
1 Algebra 2: Section 9.1 Inverse and Joint Variation.
DIRECT VARIATION In a DIRECT VARIATION, as one quantity increases, the other quantity increases. Equation of Direct Variation.
Solving Quadratics. Methods for Solving Quadratics Graphing Factoring Square Root Method Completing the Square Quadratic Formula.
Do Now The ratio of men to women on a cruise is 6 to 8. If there are 168 people on the cruise, how many women are there?
Solving Proportions. 2 ways to solve proportions 1. Equivalent fractions (Old) Cross Products (New)
10-1 Inverse Variation 10-2 Rational Functions 10-3 Simplifying Rational Expressions 10-4 Multiplying and Dividing Rational Expressions 10-5 Adding and.
Derivation of the Quadratic Formula The following shows how the method of Completing the Square can be used to derive the Quadratic Formula. Start with.
Quadratic Equations Learning Outcomes  Factorise by use of difference of two squares  Factorise quadratic expressions  Solve quadratic equations by.
4.8 “The Quadratic Formula” Steps: 1.Get the equation in the correct form. 2.Identify a, b, & c. 3.Plug numbers into the formula. 4.Solve, then simplify.
Formulas & Functions Formula – an algebraic expression that relates two or more real-life quantities.
Lesson 12 Solving inverse variation problems. Inverse variation If the product of 2 variables is a constant, then the equation is an inverse variation.
Equations with fractions can be simplified by multiplying both sides by a common denominator. 3x + 4 = 2x + 8 3x = 2x + 4 x = 4 Example: Solve
Constant of Proportionality. A direct variation is represented by a ratio or equation : or k ≠ 0 Direct Variation – constant ratio EX1) Determine if the.
Solving Quadratics Algebra 2 Chapter 3 Algebra 2 Chapter 3.
3.8 – Direct, Inverse, and Joint Variation. Direct Variation When two variables are related in such a way that the ratio of their values remains constant.
Writing Equations of Lines. What am I learning today? How can you find an equation of a line given the slope and the y intercept of the line? Given the.
Section 2.5 – Quadratic Equations
Review Test.
Simplifying Expressions
Writing Equations of Lines
Solving Linear Equations and Inequalities
DIRECT VARIATIONS.
Direct Variation.
Equation of Direct Variation
Direct Variation Lesson 2-3.
3-2: Solving Systems of Equations using Substitution
MATH CP Algebra II Exploring Rational Expressions
Section 11.2 The Quadratic Formula.
Solve a system of linear equation in two variables
Simplify Expressions 34 A number divided by 3 is 7. n ÷ 3 = 7.
3-2: Solving Systems of Equations using Substitution
Solving Systems of Equations using Substitution
Lesson 3.1 How do you solve one-step equations using subtraction, addition, division, and multiplication? Solve one-step equations by using inverse operations.
3-2: Solving Systems of Equations using Substitution
Warm Up – August 14, 2017 Solve for y. 3 + y = 2x 6x = 3y
Writing Equations of Lines
Warm up Tell whether the relation is a function.
Chapter 5: Graphs & Functions
Solving Linear Equations and Inequalities
Solving Equations 3x+7 –7 13 –7 =.
Writing Equations of Lines
Writing Equations of Lines
Example Make x the subject of the formula
TWO STEP EQUATIONS 1. SOLVE FOR X 2. DO THE ADDITION STEP FIRST
3-2: Solving Systems of Equations using Substitution
3-2: Solving Systems of Equations using Substitution
3-2: Solving Systems of Equations using Substitution
Writing Equations of Lines
The Distance & Midpoint Formulas
L5-7 Objective: Students will be able to solve quadratics by using the quadratic formula.
Topics are Topics are: Imaginary numbers (definition and simplify power of i) Complex numbers Graphing complex numbers. Add / Subtract / Multiply / Divide.
Complete the Square January 16, 2017.
Using Cross Products Chapter 3.
Writing Equations of Lines Day 92
Presentation transcript:

Variation Learning Outcomes  Write and simplify ratios.  Divide in a given ratio.  Solve problems where 2 quantities are in direct or indirect proportion.  Know the shapes of graphs representing direct and indirect proportion

Variation Direct Proportion 1. Write the following as equations. a) S r b) P r 2 c) n r 3 2. P is directly proportional to r when P = 20, r = 4. Find (i) the equation linking P and r. (ii) the value of P when r = 3.

Variation Direct Proportion 3.The resistance to motion, R is directly proportional to the square of the speed, V. Given R = 45 when V = 3, find: (i) The equation linking R and V (ii) The value of R when V = 6(iii) The value of V when R = 100

Variation Indirect Proportion If two variables x and y are indirectly proportional as one variable increases the other decreases. y Which we write as an equation y x

Variation Indirect Proportion Write as equations (i) y (ii) y (ii) x is indirectly proportional to the square of v (iv) y when t = 2, y = 6 find (a) formula linking (b) y when t = 4 (c) t when y = 6 y and t

Variation Indirect Proportion (iv) p when p = 6, v = 2 find (a) equation linking (b) p when v = 1.5 (c) v when p = 16 p and v

Variation Ratios (i)Cancel / express the following in the form 1 : n a)2 : 8b) 2 : 50c) 5 : 8 (ii)Express the following in the form m : 1 a)10 : 4b) 16 : 5 (iii)Divide the following quantities in the given ratio a)£100 (3 : 2)b) £500 (4 : 5 : 11)

Additional Notes

Variation Learning Outcomes: At the end of the topic I will be able to Write and simplify ratios. Divide in a given ratio. Solve problems where 2 quantities are in direct or indirect proportion. Know the shapes of graphs representing direct and indirect proportion Can Revise Do Further        