Question

What is the value of k if a line passes through (6,3) and (2,k) has a slope of -1?

Answer 1

k = 7

Explanation:

Slope =
`(rise)/(run)`

-1 =
`(k-3)/(2-6)`

Multiplying both sides by 2-6

-1(2-6) = k-3

-1(-4) = k-3

4 = k-3

Adding 3 to both sides

k = 4+3

k = 7