Question

Find an equation of a tangent line to the parabola y=X^2 at the point (1,-1)

Answer 1

Forgot to add but this is a precalculus problem and using derivatives is not allowed

Answer 2

Can you use limit?

Answer 3

I'm not really sure my teacher never said anything about limits. I was out of school that day and she never really caught me up

Answer 4

I guess limit is a pre-calculus topic..
Do you know how to find limit?

Answer 5

Unfortunately no

Answer 6

slope = \(\lim_{h\rightarrow 0}\frac{f(x+h)-f(x)}{h} \)
f(x) = y = x^2
f(x+h) = (x+h)^2
Can you expand f(x+h)?

Answer 7

expand f(x+h) = expand (x+h)^2

Answer 8

one question, (1,-1) is not in parabola, how to find the tangent line at this point? or the tangent line of parabola pass through that point?