Question

3. Jade is checking one of her zeros to a quadratic function. Her steps are shown. What must be true of this value?

Check = 2
0= (2)2 – 2(2) – 3
0= 4 - 4 - 3
0 -3

Answer 1

Option C: since a false statement resulted, it means x = 2 is not a zero.

Explanation:

We are told that She is checking the zeros of her quadratic function.

Now the zeros of a quadratic function f(x) are values of that make f(x) = 0. In order words they are basically the roots of the function or the x-intercept.

Now, she has tried x = 2 into her quadratic equation and it didn't yield zero.

Since it yielded -3 and not 0, it means 2 is not a zero of the quadratic function.