Question

In the following quadratic equation identify the values of a, b, and c that you would use in the quadratic formula.

7x^2-3x+9=0
A. a=7 b=-3 c=9
B. a=9 b=7 c=-3
C. a=-7 b=3 c=-9
D. a=7 b=3 c=9​

Answer 1

The general quadratic equation is ax^2 + bx + c = 0

=> Here, we have: 7x^2 - 3x + 9 = 0 <=> 7x^2 + (-3)x + 9 = 0

=> a = 7, b = -3, c = 9

=> Option A is correct.

Hope this helps!

:)

Answer 2

A

Explanation:

Let's first define what exactly the values of a, b, and c represent.

- a: this is the coefficient of the x^2 term

- b: this is the coefficient of the x term

- c: this is the constant term (no variable attached)

Our equation is: y = 7x^2 - 3x + 9.

The coefficient of x^2 is 7, so a = 7. The coefficient of x is -3, so b = -3. And finally, the constant term is 9, so c = 9.

Thus, the answer is A.