Eight more than the product of four and a number is equivalent to seven less than the same number

What term makes it inconsistent y=2x - 4

What does the sign of the slope tell you about a line?

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis