Question

Find the y-intercept of the line with gradient -3 that is tangential to the parabola y=2x-5x+1.

Answer 1

That's not a parabola... do you mean \(y=2x^2-5x+1\) ?

Answer 2

ohh yes, sorry

Answer 3

Okay. At what point is the gradient \(y'\) of the parabola equal to -3?

Give that \(y=2x^2-5x+1\), what is \(y'\) ?

Answer 4

it say tangential to the parabola \[y=2x^{2}-5x+1\] so idk .-.

Answer 5

This is a calculus problem, right?

If it is, you should have no problem figuring out \(y'\) (the derivative of y).