Question

A graph of a quadratic function is shown below.

Which of the following coordinates is not an intercept for the function?

Select one:
a. (−10, 0)
b. (0, 600)
c. (0, 800)
d. (30, 0)

Answer 1

I would think c because that's the only one that doesn't have a point on the graph.

Answer 2

Hence, the coordinates which is not an intercept for the function is:

(0,800).

option: c is the answer.

Explanation:

The x-intercept of the graph is the point where the graph touches the x-axis i.e. the point where y-value is zero.

and the y-intercept of the graph is the point where the graph touches the y-axis i.e. the point where x-value is zero.

Clearly from the graph we could see that the graph touches x-axis at the points: (-10,0) and (30,0).

Hence, the x-intercept is: (-10,0) and (30,0)

Also the y-intercepts are (0,600).

Hence, the coordinates which is not an intercept for the function is:

(0,800).