CHAPTER 5 SECTION 3 Writing Linear Equations Using Two Points.

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Presentation transcript:

CHAPTER 5 SECTION 3 Writing Linear Equations Using Two Points

Writing an Equation Using Two Points Steps:  Find the slope between the two points using  Plug the slope into the equation y=mx+b  Choose one of the points to plug in for x and y  Find b  Rewrite the Equation in slope-intercept form

Example: Given two points: (1,6) and (3,-4) Write a linear equation:

Examples: 1. (1,6) and (3,4) 2. (6,-2) and (-4,3)

Examples: 3. (-1,5) and (3,-3) 4. (3,7) and (4,6)

Examples: 5. (6,5) and (8,15) 6. (3,-4) and (1,7)

Class Work Blue book- page 151 # 1-9, 11

Closure Write on a piece of Paper  1. How to find equation of a line when given slope and y- intercept  2. How to find equation of a line given slope and a point  3. Find equation of a line given two points  4. How to find an equation of a line that is parallel to another

Homework Page 288 # 9-17 odd, 18-20