Question

A line passes through (2, 8) and (4, 12). Which equation best represents the line?

Answer 1

it should be y - 2x + 4

Answer 2

If you plug in the x values of both (2, 8) and (4, 12) into each equation, you'll find that y = 2x + 4 gives you the correct y values for both (2, 8) and (4, 12). So that is your answer.