Question

Sketch the graph of the parabola y = x^2 + 8. On the same graph, plot the point (0, -2 ). Note that there are two tangent lines of y = x^2 + 8 that pass through the point (0, -2 ).


Specifically, the tangent line of the parabola y = x^2 + 8 at the point (a, a^2 + 8) passes through the point (0, -2 ) where a > 0. The other tangent line that passes through the point (0, -2 ) occurs at the point (-a, a^2 + 8).


Find the number a

Answer 1

please help! it is not as complicated as it seems

Answer 2

never mind. I solved. but thx for taking the time to see this

Answer 3

!