Answer:
Equation of a line: y = Mx + c
Slope = 3; therefore, m = 3. Put that into the equation.
y = 3x + c
Substitute the given point to find c.
(4,8)
x = 4, y = 8
8 = 3(4) + c
8 = 12 + c
8 - 12 = c
-4 = c
Substitute c into the original equation.
y = 3x - 4
