i need help with slope intercept

Question

f(-3)=3 and f(9)=11

Answer 1

In order to find the slope, we need only two points.  The two points we have are

 

Point 1 = (-3, 3)

Point 2 = (9, 11)

 

 

Using the formula for slope

 

m = (y₂ - y₁) / (x₂ - x₁)

 

 

Plug in the value of the coordinate points to find the slope.

 

m = (11 - 3) / (9 - (-3))

m = 8 / 12

m = 2 / 3