Question

Complete the equation for the linear function whose graph contains the points (7,8) and has a slope of -1.2.

y=________+________

Answer 1

y - y1 = m(x - x1)

Where y1 is the y-value of the point, x1 is the x-value and 'm' is the slope.

y - 8 = -1.2(x - 7)

Distribute -1.2 into the parenthesis:

y - 8 = -1.2x + 8.4

Add 8 to both sides:

y = -1.2x + 16.4