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What is the line of symmetry for y=2x^2+3x+1

User Tiny Wang
by
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2 Answers

5 votes

Hi! The formula for the axis of symmetry, or x = num, the folding point - is:


(-b)/(2a)


This equation is in standard form,


ax^2 + bx + c\\

where a = 2

and b = 3


Plug these numbers into the equation:


(-3)/(2(2)) = -(3)/(4) = -.75


The axis of symmetry is:


x = -.75

User Kleinsenberg
by
8.8k points
6 votes

-3/4

To find this, use the equation -b/2a.

In this equation, a is 2, b is 3, and c (although not used) is 1.

Thus, inputting this in the equation will give you the above answer.

Hope this helps!

User Nbz
by
7.9k points

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