Question

How do you write the equation in slope intercept form given (3,-9),(0,3

Answer 1

y = - 4x + 3

Explanation:

Slope:

`m=(y_2-y_1)/(x_2-x_1)=(3-(-9))/(0-3)=(12)/(-3)=-4`

Point-slope frorm:

`y-y_o=m(x-x_o)`

m = -4 ; point (0, 3) ⇒ x₀=0, y₀=3

y - 3 = - 4(x - 0)

y - 3 = - 4x

y = - 4x + 3 ← slope intercept form