# Big Idea

## Big Idea

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##### Presentation Transcript

1. Big Idea Linear Functions (Straight line graphs)

2. slope y intercept x intercept Domain Range slope y intercept x intercept Domain Range Order pairs Tables {(-2,0), (-1,2),(0,4)(1,6)} Linear Function Graphs Domain Range New topic Equations of a line slope y intercept x intercept

3. Slope y intercept form (equation of a line) x coordinate y = m x + b y coordinate slope y intercept (0,b) What can you do with it? Given slope and y intercept: y = 3x + 6 m = 3, b = 6 m= -8, b= -4 • Determine the coordinates (table of values) • Graph it (calculator) • Determine the slope • Determine the y intercept y = -8x - 4

4. Slope y intercept form Find coordinates Slope (m) = ½ y intercept = -3

5. Slope y intercept form

6. Slope – Point Form slope What if you don’t have the y intercept? How do you create the equation of a line? Do you have … A slope…YESOne coordinate…YES Then use the slope point form to create your equation of a line. Given x coordinate Given y coordinate.

7. Slope – point form m = -2, ( -4, 1) Now you have the slope y intercept form!