Answer:
y = 12x - 16
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 = 12, hence
y = 12x + c ← is the partial equation
To find c substitute (3, 20) into the partial equation
20 = 36 + c ⇒ c = 20 - 36 = - 16
y = 12x - 16 ← equation of line in slope- intercept form