passes through (0, 1) and (2, 5)
a. y - 5 = 2(x - 2) y = 2x + 1
b. y - 5 = 2(x + 2) y = 2x + 9
c. y - 2 = 2(x - 5) y = 2x - 8
d. y + 5 = 2(x - 2) y = 2x - 9