use point slope form y - y1 = M(x - x1)
y - 4 = 3(x - 2) Plug into Point Slope form
y - 4 = 3x - 6 Distribute the 3
-4 -4 Subtract 4 from both sides
y = 3x - 10 This is the equation of a line that passes through the point (2 , 4) and has a slope of 3