Use the values of a, b, and c below to calculate the value of d that will put the black point precisely on a line
through the blue points.
Then watch and check your answer.
a=1
b= -2
c=4
d=

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