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X= -b / 2a
y = 2x² + 4x - 10 The axis of symmetry can be found by setting the derivative equal to zero: y = ax² + bx + c y' = 2ax + b = 0 x = -b/2a Or you could just memorize the formula above. x = -b/2a x = -4 / (2*2) x = -1.
The answer does depend on the font, but: B, F, G, J, L, P, Q, R and S. In a few fonts, for example, the top and the bottom of B are the same size so the letter does have an axis of symmetry.
The axis of symmetry for a parabola of the form y = ax2 + bx + c is x = -b/2a So the axis is x = -2/2*(-3) or x=1/3
y=x2+2x+1 -b -2 2a= 2= -1 = axis of symmetry is negative one.