Answer:
x = -b/2a
Step-by-step explanation:
The symmetry cuts any geometric shape into two equal halves. The axis of symmetry formula is given as, for a quadratic equation with standard form as y = ax2 + bx + c, is: x = -b/2a.
x=-3
The line is a parallel line to y axis intersecting at -3 at x
hence x= -3
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