The line of symmetry for the quadratic equation y = ax2 - 2x - 3 is x = 1. what is the value of "a"?

value of a is 1.

Step-by-step explanation:

A quadratic equation  ....[1]  where a, b and c are the coefficient.

then the axis of symmetry is given by:

            .....[2]

As per the statement:

The line of symmetry for the quadratic equation  is x = 1.

On comparing given quadratic equation with [1] we have;

b = -2

then;

Substitute x = 1 in [2] we have;

Simplify:

⇒

Therefore, the value of a is 1.

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step-by-step explanation: