Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 9 - Solving Quadratic Equations - 9.5 - Solving Quadratic Equations Using the Quadratic Formula - Exercises - Page 521: 33

Answer

The graph of $y=-6x^2+3x-4$ has no $x-$intercepts.

Work Step by Step

The given function is $\Rightarrow y=-6x^2+3x-4$ Find the number of real solutions of $0=-6x^2+3x-4$ $= b^2-4ac$ Substitute $-6$ for $a,3$ for $b,$ and $-4$ for $c$. $= (3)^2-4(-6)(-4)$ Simplify. $= 9-96$ Subtract. $= -87$ Discriminant is less than $0$, Hence, the equation has no real solutions. The graph of $y=-6x^2+3x-4$ has no $x-$intercepts.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.