The line of symmetry for the quadratic equation y=ax^2+8x-3 is x=4. What is the value of “a”?

The value of a is -1.

Step-by-step explanation:

The line of symmetry of a parabola is a vertical line that divides the parabola into two congruent halves.

For a quadratic function in standard form, , the line of symmetry is a vertical line given by .

We know that the quadratic equation, , has x = 4 as line of symmetry. Therefore, the value of a is:

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5