1. Writing Equations from Tables
Ordered pair ( x, y)
Slope = rise over run
Y- intercept point is (0,b)
Slope intercept form y = mx +b

2. Ways to find slope
Option 1 Draw a graph and make a triangle to determine the rise over the run

3. Ways to find slope
Option 2 Determine ratio for the change in y to the change in x x y -1 1 -4

4. Ways to find slope
Option 2 Determine ratio for the change in y to the change in x
Given ( 0 , -1 ) and (1, -4)
M = y – y
x - x

5. Plug in the values y=mx+b
MONDAY’s Notes Write the equation
Find m and b.
m =
b =
Plug in the values y=mx+b

6. Writing Equations from Tablesx y -2 5 -1 2 1
y = mx +b

7. Writing Equations from Tables
Find m and b.
m =
b =
Plug in the values y=mx+b x y 4 1 -2 2 -8

8. Writing Equations from Tables
Find m and b.
m =
b =
Plug in the values
y=mx+b x y 3 2 1 -1

9. Writing Equations from Tables
Find m and b.
m =
b =
y=mx+b
Plug in the values x y -4 -2 -3

10. Writing Equations from Tables
Find m and b.
m =
b =
Plug in the values y=mx+b x y -2 2 -1 1

11. So where do we see examples of graphs, tables and equations like this in the real world?