Question

find the volume of the given solid:
under the surface z=2x+y^2 and above the triangle vertices (1,1),(4,1) and (1,2).

Answer 1

what is the equation of this part of the area?

Answer 2

y=2x?

Answer 3

no,you can see that the slope from x=1 to x=4 is down for that part of the graph, so the coefficient of x will be negative
you should use point-slope form way back from algebra I to do this