29.9k views
1 vote
7. Graph the following quadratic equation by first completing the square: y= −2x^2 + 6x + 7.

8. Find the Minimum or Maximum (state which it is) -value of the following quadratic equation by completing the square: y=2/3 x^2 + 5/4x - 1/3

1 Answer

1 vote

Answer:

Explanation:


y=-2x^2+6x+7


=-2(x^2+(3)/(2) ^2)+7-(-(18)/(4))

  • To complete the square put (b/2)^2. 3/2^2 is then amplified by the -2 at the front. In total, you added -18/4 to the equation so you have to subtract -18/4.

=
-2(x-(3)/(2))^2 +11 (1)/(2)

User Eadmaster
by
7.6k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories