The points (2, -12) and (4, r) lie on a line with slope 4. Find the missing coordinate r.

Name the most appropriate metric unit for each measurement

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

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