Question

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

Answer 1

Answer:

       y = - 4x + 3

Step-by-step explanation:

Slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{3-(-9)}{0-3}=\dfrac{12}{-3}=-4$

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