3.) Graph the following lines. Each line will go through a suspect except one. The only suspect left is the murderer.
y = 1/3 x - 17
y = -4/7 x - 6
y=-1/7 x + 7
y = 2/7 x - 2
y = 2/3 x + 12
y = 1/2 x - 11
y = -1/10 x + 15
y = x + 4

2 5/8 is the final answer! : )

the answer is b

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.