Answer:
y - intercept = - 12
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = [tex]\frac{1}{4}[/tex] , thus
y = [tex]\frac{1}{4}[/tex] x + c ← is the partial equation
To find c substitute (12, - 9) into the partial equation
- 9 = 3 + c ⇒ c = - 9 - 3 = - 12 ← y- intercept
