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saw5 [17]
3 years ago
8

What is the value of y if f(x)=-3?

Mathematics
1 answer:
mote1985 [20]3 years ago
5 0
F(3)=5. Explanation: substitute the value of 3 given.
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_____

<em>Comment on the graph</em>

I like to find the roots of higher-degree polynomials using a graphing calculator. The red curve is the cubic. Its only rational root is r=1. By dividing the function by the known factor, we have a quadratic. The graphing calculator shows its vertex, so we know immediately what the vertex form of the quadratic factor is. The linear factors are easily found from that, as we show above. (This is the "other means" we used to find the quadratic roots.)

7 0
3 years ago
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