Which unit is the best estimate for the length of a house?
a.12 yards
b.12 feet
c.12 miles
d.12 inches

step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96

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.