What is the area between the graph of y=2x-6 and the x-axis between x=3 and x=7?

Answer 1

I'm making a triangle:

c=2x+6

a=7-3=4

b=8.35

a^2+b^2=c^2

c=16+69.72=85.72√2=9.26

area=ab/2=16.7

Values for b came from the graph.