Question

X

-1
-1
0
4
y
3
2
-4
2
7.1
Graph the relation shown in the table. Is the relation a function? Why or why not?
No; a horizontal line passes through two graphed points.
Yes; no horizontal line passes through two graphed points.
Yes; no vertical line passes through two graphed points.
No; a vertical line passes through two graphed points.

Answer 1

No; a horizontal line passes through two graphed points.

Explanation:

For a table to be a function there must be one input for one output. When the input, x, is -1 the output, y, can either be 3 or 2 therefore not being a function because of the horizontal line.