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AppleTV
[9.01] Determine whether the graph of y = −2x2 − 3x + 10 opens up or down and whether it has a maximum or minimum point. Down and Maximum Down and Minimum Up and Maximum Up and Minimum
a is negative, so can you give an estimate of what hte graph is shaped like?
Yup.|dw:1356634529314:dw| does that look like a maximum or a minimum?
If the coefficient on the x^2 term is negative the graph opens downward and has a maximum. If the coefficient on the x^2 term is positive the graph opens upwards and has a minimum. If you can't remember this plot the graph on your calculator.