Answer:
The graph of a linear function is a straight line.
h(8) = -25 means that (8,-25) is a point on the line
h(-1) = 11 means that (-1,11) is also on the line
slope of line = (11-(-25))/(-1-8) = 36/(-9) = -4
Using the point-slope form, an equation of the line is:
y - 11 = -4(x-(-1))
Simplifying, we get y = -4x + 7
In other words, h(x) = -4x + 7
So, h(5) = -4(5) + 7 = -13
