19. which one of the following statements expresses a true proportion?
o a. 3: 4 = 9: 12
o b. 7: 9 = 8: 9
oc. 2: 1 = 1: 2
o d.54: 9 = 6: 3

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

Which of the following tables represents exponential functions?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?