Question

Which are quadratic equations?

Answer 1

Standard form of quadratics: \(ax^2 + bx + c = 0\)

Answer 2

Any equation of the form ax^2+bx+c=0 is a quadratic equation where a is not equal to zero and a,b,c are real numbers

Answer 3

so c and d?

Answer 4

Yep

Answer 5

okay how would you determine a graph opening downward in the same form?

Answer 6

Can you give me an example?

Answer 7

Like do you mean determining whether the parabola is going to face up or down?

Answer 8

see attachment

Answer 9

Well if the a value is positive then the parabola faces upward and if the a value is negative then the parabola faces downward.

Answer 10

so would any of them be? B?

Answer 11

B works and then there's one more. You might need to rearrange them if you'd want to see it in the standard form

Answer 12

ohh d?

Answer 13

Yep

Answer 14

can u help with a few more? i do online school so its hard understanding some concepts but youre really helpful

Answer 15

Sure but can you make new posts?

Answer 16

Or else the thread might get too long