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5 votes
Which graph represents the function y = -2x^2 - 5.

Can someone explain how to get the answer?

Which graph represents the function y = -2x^2 - 5. Can someone explain how to get-example-1
Which graph represents the function y = -2x^2 - 5. Can someone explain how to get-example-1
Which graph represents the function y = -2x^2 - 5. Can someone explain how to get-example-2

2 Answers

5 votes

Answer:

1. D. the last graph

2. D. 11, -11

3. C. -6, 4

4. C. -6x +/- sqrt 36-(4)(2)(-5) all over 4

5. C. 2

Explanation:

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User Pat Murray
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3 votes
The easiest way to know is to look at the last number, -5. That shows where on the y-axis the line will cross. in this function, the graph will cross on -5. So the second graph shows the graph crossing on -5, therefore that would be the correct graph.
User VenkatK
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7.4k points