Question 1073619
 The line of symmetry of the parabola whose equation is y = ax^2 - 4x + 3 is x = -2. What is the value of "a"?
Line of symmetry occurs where x = -b/(2a)
Solve for "a":: -b/2a = 4/(2a) = -2
-4a = 4 
a = -1
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Cheers,
Stan H.
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A.) -2
B.) -1
C.) -1/2