Question

A line that includes the points (8,9) and (9,k) has a slope of

-
4. What is the value of k?

Answer 1

k=5

Explanation:

y=mx+b

m=-4

y=-4x+b

*INSERT X AND Y VALUES*

9=-4(8)+b

9=-32+b

41=b

SO....

y=-4x+41

k=-4(9)+41

k=-36+41

k=5