Complete the following sentence: you can verify the zeros of the function y=x2+6x-7 by using a graph and finding where the graph

a. is at a minimum

b. is at a maximum

c. crosses the x-axis

d. crosses the y-ax

You can verify the zeros of the function y=x2+6x-7 by using a graph and finding where the graph  C. C. crosses the x-axis . Finding the zeros mean equating the equation to 0 or y =0. When y =0, this is equal to x-axis. C. is the answer to the problem given above. 

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