Question

Line CD passes through points (0, 2) and (4, 6). Which equation represents líne CD?

Answer 1

the equation for a line is y = m x  + b

using the first set of coordinates (0,2)

2 = m * 0 + b

b = 2

using the second set of coordinates (4,6)

6 = 4 m + 2

4 m = 4

m = 4 / 4

m = 1

use those numbers into the line equation

y = x +2

Answer is: C