Which relations are functions? choose all answers that are correct. a. x –1 1 3 3 y 2 3 4 5 b. a parabola, opening down, is graphed on a coordinate grid. the parabola goes through point 0, 5, point 2, 1, and point negative 2, 1. c. {(−2, 4), (−1, 2), (1, 2), (3, 5)} d. a set of points are plotted on a coordinate grid. the points include point negative 3,3, point negative 1, 1, point negative 1, 6, point 1, 4, point 2, 1, and point 3, 2.

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1