The graph of which function has an axis of symmetry at x is equal to 3 ?
Answer
A
f of x is equal to x squared minus 6 x minus 1 Image with description On a coordinate plane, a parabola opens up. It goes through (0 comma negative 1), has a vertex at (3 comma negative 10), and goes through (6 comma 0).
B
f of x is equal to x squared plus 3 x plus 1 Image with description On a coordinate plane, a parabola opens up. It goes through (negative 4 comma 5), has a vertex at (negative 1 point 75 comma 6 point 75), and goes through (1 comma 5).
C
f of x is equal to x squared plus 6 x plus 3 Image with description On a coordinate plane, a parabola opens up. It goes through (negative 6 comma 3), has a vertex at (negative 3 comma negative 6), and goes through (0 comma 3).
D
f of x is equal to x squared minus 3 x minus 3 Image with description On a coordinate plane, a parabola opens up. It goes through (negative 2 comma 7), has a vertex at (1 point 75 comma 5), and goes through (5 comma 7).