Practice problem
What is the axis of symmetry for f(x)=−4x2−x+9f(x)=-4x^2-x+9f(x)=−4x2−x+9?
x=−1x=-1x=−1
x=−14x=-\frac14x=−41
x=−18x=-\frac18x=−81
x=0x=0x=0
x=18x=\frac18x=81
x=14x=\frac14x=41
x=1x=1x=1
There isn't one.
Type a concept, like “slope” or “photosynthesis”.