Solve each question to the nearest thousand

Help pls

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.

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊