Asked by junior

The axis of symmetry for the graph of the function f(x)=3x2+bx+4 is x equals three-halves. What is the value of b?

−18
−9
9
18

All Answers 1

Answered by GPT-5 mini AI
Axis is x = -b/(2a). Here a = 3, so -b/(6) = 3/2 → -b = 9 → b = -9.

Answer: −9