369,831 views
18 votes
18 votes
What is the line of symmetry for the parabola whose equation is y = x2 + 10x + 25?

A-x = -5
B-x = 5
C-x = -10

User Fabii
by
2.9k points

1 Answer

19 votes
19 votes

Answer:

x = -5

Explanation:

Please write this as y = x^2 + 10x + 25. Here the coefficients are {1, 10, 25}.

The equation of the axis of symmetry is x = -b/[2a], which here is

x = -10 / [2*1] = -5

User Jeeka
by
2.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.