Lesson 2.7 AIM: How to find the slope and equation of a line using two points.

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Lesson 2.7 AIM: How to find the slope and equation of a line using two points

Slope Formula m = Find the Slope using the two points (2,4) and (8,6). (x 1 y 1 ) (x 2 y 2 ) y 2 = 6 y 1 = 4 x 2 = 8 x 1 = 2 m =

Slope Formula m = Find the Slope using the two points (5,-2) and (3,1). (x 1 y 1 ) (x 2 y 2 ) y 2 = 1 y 1 = -2 x 2 = 3 x 1 = 5 m =

Slope Formula m = Find the Slope using the two points (7,1) and (5,15). (x 1 y 1 ) (x 2 y 2 ) y 2 = 15 y 1 = 1 x 2 = 5 x 1 = 7 m =

Slope Formula m = Find the Slope using the two points (-3,4) and (1,8). (x 1 y 1 ) (x 2 y 2 ) y 2 = 8 y 1 = 4 x 2 = 1 x 1 = -3 m =

Write an equation for the line that goes through points (2,4) and (8,6). Step 1: Write the Equation Step 2: Plug in (2,4) for (x,y) x = 2 y = 4 Step 3: Solve for b. _____________ Answer

Write an equation for the line that goes through points (5,-2) and (3,1). Step 1: Write the Equation Step 2: Plug in (3,1) for (x,y) x = 3 y = 1 Step 3: Solve for b __________________ 5.5 = b Answer