Vertical Line Test- Graphs

Which graph does NOT pass the vertical line test?

In other words, which graph is NOT a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Which of the following graphs represents a function according to the vertical line test?

• A graph where a vertical line intersects the curve at two points.

• A graph where a vertical line intersects the curve at only one point.

• A graph where a vertical line intersects the curve at three points.

• A graph where a vertical line does not intersect the curve at all.

Consider the graph of a circle. Does it pass the vertical line test?

• Yes, because a vertical line intersects the circle at only one point.

• No, because a vertical line can intersect the circle at two points.

• Yes, because a vertical line does not intersect the circle at all.

• No, because a vertical line can intersect the circle at three points.

Which of the following graphs fails the vertical line test?

• A straight line graph.

• A parabola opening upwards.

If a graph passes the vertical line test, what can we conclude about the graph?

• It is a one-to-one function.

• It is a function.

• It is not a function.

• It is a many-to-one function.

Which graph does NOT pass the vertical line test?

Vertical Line Test: When a vertical line crosses the line of a relation ​ (a)   ​ the relation ​​ (b)   a function.​ ​ ​

• never
• more than once
• only once
• is
• four times
• positivity

Is y a function of x?

• function

• not a function

Is y a function of x?

• function

• not a function

Is y a function of x?

• function

• not a function