Question

Work out the equation of the line which has a gradient of ½ and

passes through the point (4, -2).

Answer 1

Answer is y = 1/2x - 4

Using point slope formula

y - y1 = m ( x - x1)

y - -2) = 1/2 (x - 4)

y + 2 = 1/2x - 2

Subtract 2 from both sides to isolate y

y + 2 - 2 = 1/2x -2 -2

y = 1/2x - 4