Asked by CD
The line of symmetry of the parabola whose equation is y = ax2 - 4x + 3 is x = -2. What is the value of "a"?
-2
-1/2
-1
-2
-1/2
-1
Answers
Answered by
R_scott
for the axis of symmetry ... x = -b / 2a
-2 = - -4 / 2a ... -4 a = 4
-2 = - -4 / 2a ... -4 a = 4
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