Aline with the equation y=13x−7 is dilated with a scale factor of 3 and a center at (x, -9). the line maps onto itself after the dilation. the y-coordinate of the center of the dilation is − 9. what is the x-coordinate of the dilation?

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12