Question

Write the equation of a line that has a slope of -3 and goes through the point (5,7).

A) (y – 5) = -3(x – 7)
B) (y + 5) = -3(x + 7)
C) (y + 7) = -3(x + 5)
D) (y – 7) = -3(x – 5)

Answer 1

The equation of the line would be D) y - 7 = -3(x -5)

Explanation:

In order to find this, we must first start with the base form of point-slope form.

y - y1 = m(x - x1)

Now we put the slope in for m and the point in for (x1, y1)

y - 7 = -3(x - 5)