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Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer. 

y = (negative 2 times x^2) + (b times x) + 5

 

In the xy-plane, the graph of the equation above assumes its maximum value at x = 2. What is the value of b?

 

Answer Choices
Want a hint?

Use the fact that y = (negative 2 times x^2) + (b times x) + 5 assumes its maximum value at x = 2 to write this quadratic equation in the form  y = a times ((x - h)^2) plus k.

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