What is the equation of the parabola? coordinate plane with a parabola facing down with vertex at 0 comma 5, the point 0 comma 3 and a horizontal line going through 0 comma 7

y = −one eighthx2 + 5
y = one eighthx2 + 5
y = one eighthx2 − 5
y = −one eighthx2 − 5

Okay so i dont know the answer completly but I know what its not. Its not y=1/8x2- 5

So i think it might be y=-1/8x2-5

Step-by-step explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

the equation of the line that passes through the points and has o form

if line passes through the points (-1, -3) and (2, 1), then

the equation in the standard form is