3How do we use Two Points to Write an Equation? Step 1: Find the slope.Step 2: Use one of the points and your slope to solve for b.Step 3: Write your equation in slope-intercept form using slope and y-intercept
4ExampleWrite an equation for the line through these points. (-1,-5) and (-2, 3).
5Your Turn: Write an equation for the line through these points. (1, 3) and (-1, -1)(-1, 6) and (7, -10)(10, -1) and (4, 2)(-14, -2) and (7, 7)
6Write an equation of the line that has each pair of intercepts x-intercept: (-3,0), y-intercept: (0,6)
7Your Turn:Write an equation of the line that has an x-intercept of (2,0) and a y-intercept of (0,-5).
8Part 2: How do write an equation using a table? Step 1: Find the rate of change. (change in Y over change in X)Step 2: Use either point and your slope to solve for b.Step 3: Write your equation in slope-intercept form using slope and y-interceptXY-1436571110
9Your Turn:Write in slope-intercept form.XY-11-7-1-34195
10Review Key Concepts Slope-intercept Form Y = mx + b Standard Form Ex. Y=-½x + 5Standard FormAx + By = CEx. 2x + 3y= 5
11Summary:Name the steps for writing an equation from two points?