Hey there!
For point slope, we need one point and a slope. We have the point(s), but we need to find the slope. We can do this by using the slope given two points formula-
y2-y1/x2-x1
Plug in points (4,0) and (2,6)
6-0/2-4
6/-2
-3
Now that we have the slope, we can use your point (2,6) in our point slope formula-
y-y1 = m(x-x1) =
y-6 = -3(x-2)
This is your answer.
Hope this helps!