Which relation is a function? Select all that apply {(5,1), (4,1), (3, 1), (2,1)}

{(5,3). (4,1), (3, 2), (2,0)}

{(5,2), (2,5), (5. 3), (3,5)}

{(5,5). (4,4), (3, 3), (2,2}

{(5,1), (5,2), (5, 3), (5.4)}

What term makes it inconsistent y=2x - 4

Plz hurry evaluate the expression a+b where a=8 and b=19

80 points suppose marcy made 45 posts online. if 23 of them contained an image, what percent of her posts had images? round your answer to the nearest whole percent. 54 percent 51 percent 49 percent 48 percent