Question

1. Which line does not represent a function? horizontal vertical diagonal 2. Can you determine whether a graph represents a function to perform the horizontal line test

Answer 1

1. Vertical

2. We can't determine with the horizontal line test.

Step-by-step explanation:

A function is a relation where each value of x is related with only one value of y.

We can also say that a graph is a function if when we draw a vertical line, the line only crosses the graph once.

So, the line that doesn't represent a function is the vertical line and we can't determine whether a graph represents a function with the horizontal line test.