# 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: If x = -b/2a, then 2a = -b / x so a = -b / 2x or a = b / -2x

So the denominator is -2x because it has to take the minus sign that the numerator refused to take ;-)

The answer is B on edgen.

## Related Questions

If f(x) = 4x - 2, what is the y-intercept of f^-1 (x)?
1/4, 1/2, -1/2, -2

The y-intercept is .

Given that f(x) = 4x-2.

To find the inverse function:

1) Write f(x) = y

2) Switch x and y.

3) Solve for y.

4) Write .

So,

Comparing this with y=mx+b,

b = y-intercept =

1/2

Step-by-step explanation:

Which expression is equivalent to ^3√216x^27? 6x3 6x9 72x3 72x9

To solve this problem you must apply the proccedure shown below:
1. You have the following expression given in the problem above:

2. Rewriting the expression we have:

3. You have that and the exponent  are divisible by index . Therefore, you have:

Therefore, as you can see,
the answer is the option, which is:

b

Step-by-step explanation:

Which three of the following are correct 1/5 < 1/4
2/3= 5/9
1/3 = 2/6
3/4> 6/10
2/3 > 4/5

Get common denominators on the fractions in each expression

The first = true
The second = false
The third = true
The fourth = true
The fifth = false

Therefore, 1. 3. 4. are all true.

Michaela pays her cell phone service provider \$49.95 per month for 500 minutes. Any additional minutes used cost 0.15 each. In June, her phone bill is \$61.20. How many additional minutes did she use?

\$61.20=\$49.95+\$0.15M
\$11.25=\$0.15M
75=M