Question

Consider the graph of the quadratic function y = x^2 – 3x – 40.

What are the roots of the function?

A. –8 and 20
B. –40 and –8
C. –8 and 8
D. –40 and 20

Answer 1

Consider the graph of the quadratic function y = x2 – 3x – 40.

What are the roots of the function?

–8 and 20

–40 and –8

–8 and 8

–40 and 20

CORRECT ANSWER!!!!--- A -8 AND 20

i just took the unit test and this answer is one that i just got wrong because of said answer above me says that it was B. It's A, so now you can get the right answer.

Answer 2

A. -8 and 20

Explanation:

If we use the graphing calculator to graph the equation
`(1)/(4) x^2-3x-40` we get this graph. (image attached)

The zeroes are -8 and 20