# Which of the following must be true about b?

Anonymous
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### Question Description

In the xy-plane, the graph of the function f(x) = x2 + bx + 4 does not intersect the x-axis. Which of the following must be true about b?

• A. −8 ≤ b < −4

• B. b = −4

• C.−4 < b < 4

• D.b = 4

• E. 4 < b ≤ 8

I would need a comprehensive explanation on how you arrived at your answer so I'll know how to it the next time around. Thanks!

amitchoudhary8513
School: University of Maryland

Hey Dude, The answer is in the attached document. Please let me know if you need any more clarifications. I am always here to help. :)

Question: In the xy-plane, the graph of the function f(x) = x2 + bx + 4 does
not intersect the x-axis. Which of the following must be true about b?

A. −8 ≤ b < −4

B. b = −4

C.−4 < b < 4

D.b = 4

E. 4 < b ≤ 8

The problem states that f(x) does not intersect...

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Anonymous
Thank you! Reasonably priced given the quality not just of the tutors but the moderators too. They were helpful and accommodating given my needs.

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