Ayuda Porfa Es Para Hoy :(​

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

c: lkllmn.

hope it's you

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.