Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

0.5

Step-by-step explanation:

is factored form for a quadratic where are the x-intercepts.

So we have both equations look like this:

First parabola:

Second parabola

We are going to find in both by using the y-intercept information.

First parabola has y-intercept (0,-12):

Divide both sides by -24:

Simplify:

Second parabola has y-intercept (0,-24):

Divide both sides by -24:

The positive difference will be obtained from doing larger value minus smaller value:

Please let me know if you have any questions about what I did here.

1/5^2 = 7.56/45