Which linear inequality is represented by the graph? Oys 2x + 4
Oys 1/2x + 3
O y 2 1/2x + 3
O y 2x + 3

b.-4 units

all you   do is count how many times you move

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.