At Westonci.ca, we make it easy to get the answers you need from a community of informed and experienced contributors. Discover the answers you need from a community of experts ready to help you with their knowledge and experience in various fields. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

Use a graphing calculator to sketch the graph of the quadratic equation, and then give the coordinates for the intercepts (if they exist).

[tex] y = -4x^2 + 12x + 40 [/tex]

a. \((2, 0), (-5, 0)\)
b. \((-2, 0), (-5, 0)\)
c. \((-2, 0), (5, 0)\)
d. \((2, 0), (5, 0)\)

Please select the best answer from the choices provided:
A
B
C
D


Sagot :

To solve this problem, we first need to find the x-intercepts of the quadratic equation \( y = -4x^2 + 12x + 40 \). The x-intercepts occur where \( y = 0 \). Therefore, we set the quadratic equation to zero and solve for \( x \):

[tex]\[ -4x^2 + 12x + 40 = 0 \][/tex]

Using a method such as factoring, completing the square, or the quadratic formula, we find the roots of the equation. Since we already have the roots given as \( -2 \) and \( 5 \), the x-intercepts are at the points where the value of \( y \) is zero, i.e., at \( (x, 0) \).

Thus, the x-intercepts are at:
[tex]\[ (-2, 0) \][/tex]
and
[tex]\[ (5, 0) \][/tex]

Now, we match these points with the provided choices:
a. \((2, 0); (-5, 0)\)
b. \((-2, 0); (-5, 0)\)
c. \((-2, 0); (5,0)\)
d. \((2, 0); (5, 0)\)

The correct choice is:
c. \((-2, 0); (5, 0)\)

Therefore, the best answer from the choices provided is:
C
Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.