Which of the following functions has a rate of change that stays the same?

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.