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 K=? .

Answer 1

slope = m = -1

y=mx+b

y=(-1)x + b where b = y intercept. plug in a point to solve for b. (2,0) means x=2, y=0

0=(-1)(2) + b

b =2

y=-x+2. Now plug in the point (-2,k)

k = -(-2)+2 = 2+2

k= 4