Is the relation {(3, 5), (-4, 5), (-5, 0), (1, 1), (4, 0)} a function? explain. type your answer below. only answer if you're gonna explain how you got it

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x