A vertical parabola goes through (1, -2), (-3, 10), and (4, 31). Use matrices to solve for D, E, and F, given the general form (since it is a vertical parabola there is not a term)

The general equation of the vertical parabola is

, where a,b and c are constant.

The parabola passes through the points D(1,-2), E(-3,10), and F(4,31).

For point D:

For point E:

For point F:

All the three equations can be written in the matrix for as:

The value of all the three coefficients can be determined by solving the above equation as

On solving this, we have

So, values of the constants,

a=2, b=1, and c=-5

Hence, the required equation of parabola is

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it

9x