3 years ago

The line of symmetry of the parabola whose equation is y = ax2 - 4x + 3 is x = -2. What is the value of "a"?

1 answer:

4 0

For equation
y = ax² +bx +c
the line of symmetry is given by
x = -b/(2a)

Filling in the given values, we have
-2 = -(-4)/(2a)
a = 4/(2(-2)) = -1

The value of "a" is -1.

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