The shortest distance from a point to a straight line is
a. the perpendicular from the line to the point.
b. a vertical line through the point.
c. the perpendicular bisector of the line.
d. a parallel through the point to the line.

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Ineed to know the answer to this algebra question.

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?