1. Slope-Intercept From 3

2. Goal Given a table of data, find an equation of the line in the y=mx+b form.

3. Step 1 Write original equation: y=mx+b

4. Step 2

5. Step 3 Plug the slope in for m into y=mx+b

6. Step 4 Check to see if x=0 is a point. If so, that y- value is the y intercept. Plug that number in for b.

7. Step 5 Of x=0 is NOT a point, then we must find b. Pick any point from the list and plug it in for x and y. Then solve for b. Plug b into final equation.

8. Example 1 xY 0 12 25 38 411

9. You try! xy 06 14 22 30 4-2

10. Example 2 xy 110.5 212 313.5 415 516.5

11. You try xy 135 250 364 480 595

12. Homework Back of in-class examples