Question

The axis of symmetry for a quadratic equation can be found using the formula x =

where a and b are coefficients in the
quadratic equation and x represents the values along a vertical line on the coordinate plane.
What is the equation when solved for a?

Answer 1

B.

a= -b/2x

Explanation:

Answer 2

The denominator of the fraction is 2x and the answer is a= -
`(b)/(2x)`

Explanation:

Suppose we have a quadratic equation of the form:

ax²+bx+c

The axis of symmetry of the parabola is given by:

`x= (-b)/(2a)`

From here, we must clear the value of a.

For this, we follow the following steps:

1) Pass 2a multiplying to the other side of the equation:

2ax=-b

2) Clear the value of a by passing 2x to divide:

`a= (-b)/(2x)`