Which relation is a function?

And explain how you got it so i can understand future problems : 3

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-responsequestion. there are 15 questions on the test and the students have been given 55 minutes to complete itwhich value could replace x in the table? 5507-m23-m8(15-m)8(15)-m