# Limits review problem

• February 9th 2010, 04:02 PM
dMh
Limits review problem
I'm not sure how to go about solving this problem. = \

Could someone please give me some suggestions as to how to begin.

"Find the equations of both lines that pass through (4,-10) and are tangent to the parabola y = x^2 -10x + 18."

$y-b=m(x-a)$
$x^2-10x+18+10=(2x-10)(x-4)$