Ee i really need help-

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Consider the integral: 4 0 16 − y2 − 16 − y2 4 1 x2 + y2 dz dx dy . (a) describe w. use the standard view of the x, y, and z axes. front half of a cone with a rounded top. full cone with a flat top. right half of a cone with a flat top. front half of a cone with a flat top. right half of a cone with a rounded top.

Which graph corresponds to the function f(x) = x2 + 4x – 1?