Simplify 2a-8/a^2-9 /a^2-2a-8/a^2+5a+6 (2a^2-a-15)

What is the ratio of the change in y-values to the change in x-values for this function? a) 1: 13 b) 2: 5 c) 5: 2 d) 13: 1

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )