Use an equation to find the value of k so that the line that passes through (-2,k) and (2,0) has a slope of m=-1.

Answer 1

Use the point slope form:

m(x - x₁) = (y - y₁)

1. m = slope = -1
2. (x₁, y₁) = (2,0)
3. (x, y) = (-2,k)

Plug in the values and solve k.