where have i gone wrong??

Question

anonymous · Answer

you could cheat and find the area using the area of a triangle formula

anonymous · Answer

i need to find the volume...id rather do it the proper way=)

anonymous · Answer

i didnt even read the entire question..my bad

anonymous · Answer

all good=)

anonymous · Answer

maybe @satellite73 knows this, because i don't even know where to start (except that its an integral)...sorry

anonymous · Answer

aww no biggie...thanks anyways=)

zepdrix · Answer

Hmm so they've drawn the region of integration and we have to figure out the limits for x and y.
They've also provided the function, so we'll be able to set everything up nice and pretty in a second :O

anonymous · Answer

i set 4<y<4x+1 and 1<x<5 and set the function in the dy dx order

zepdrix · Answer

Hmm I think the upper bound for y is y=4x, I'll check again to make sure I didn't mess up though.

zepdrix · Answer

$$(x_1,y_1)=(1,4)$$$$(x_2,y_2)=(5,20)$$$$m=\frac{ y_2-y_1 }{ x_2-x_1 }=\frac{ 20-4 }{ 5-1 }=\frac{ 16 }{ 4 }=4$$
$$y=4x+b$$Plugging in one of our points:
$$4=4(1)+b$$$$b=0$$

anonymous · Answer

hey i solved the and

anonymous · Answer

answer*

anonymous · Answer

your right y=4x ...my bad..thankx a ton!