Estimate the sum or difference. Use the benchmarks, 0, 1/2, and 1.

a .4y4

hope this !

(-5,-28)

i graphed to on desmos.

i think it would be c

mark brainliest if im right

step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.