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anonymous one year ago Medal & fan. The line of symmetry of the parabola whose equation is y = ax^2 - 4x + 3 is x = -2. What is the value of "a"? 1.)-2 2.)-1 3.)-1/2

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1. anonymous

@OregonDuck

2. OregonDuck

@LegendarySadist

3. anonymous

@saseal

4. anonymous

@Mehek14

5. anonymous

$c-\frac{ b^2 }{ 4a }$

6. anonymous

but im trying to find a

7. anonymous

$a = \frac{ b }{ 2x }$

8. anonymous

oh so -2

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