Answer:
The y-intercept of the line is 9.
Step-by-step explanation:
y-y1=m(x-x1)
y-1=-2(x-4)
y-1=-2x+8
y=-2x+8+1
y=-2x+9
y=mx+b where m=slope and b=y-intercept
1) x=1
2) x=2.9
3) x=-10
4) x=?
5) IDK
12 /4 st your answer would be 3 st
If you wanted to rotate f(x) around the y axis from x=a to x=b then the volume would be

that would be


1/x^10=x^-10
integrate
-1/(9x^9)
so

=
![\pi [\frac{-1}{9x^{9}}]^8_1=\pi (\frac{-1}{9(8^{9})}-\frac{-1}{9(1^{9})})=](https://tex.z-dn.net/?f=%5Cpi%20%5B%5Cfrac%7B-1%7D%7B9x%5E%7B9%7D%7D%5D%5E8_1%3D%5Cpi%20%28%5Cfrac%7B-1%7D%7B9%288%5E%7B9%7D%29%7D-%5Cfrac%7B-1%7D%7B9%281%5E%7B9%7D%29%7D%29%3D)



that's the volume of the solid
Answer:
one dollar and 20 cents
Step-by-step explanation:
I divided 4.80 by four