Question

The axis of symmetry for a quadratic equation can be found using the formula x = -b/2a , where a and b are coefficients in the quadratic equation and x represents the values along a vertical line on the coordinate plane.
When the equation is solved for a, such that b is the numerator of the resulting fraction, what is the denominator of the fraction?

2x
–2x
1/2x
–1/2x

Answer 1

X = - b/2a
Solving for a,

a = -b/2x

If b is the numerator, the denominator is -2x
The second option is correct.

Answer 2

Answer:

I just took the test. The answer is -2x.