The maximum speed of a greyhound is 153 miles per hour less than 3 times the maximum speed of a cheetah. If a greyhound's maximum speed is 42 miles per hour, what is the maximum speed of a cheetah? Check to make sure your answer is reasonable.

Hi there! The answer is C. y = 4x + 5.

To make the line steeper, we need to change the slope of the line, which is positioned before the variable x. In order to end up with a steeper line, the slope must be bigger (and therefore represented by a larger number). The steepest line in the answers is C.