The graph of a system of two linear equations is a pair of lines that intersect at the point 5,7 how many solutions do the system have?

a is the correct

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.