Question

I need a little direction on this one,

For what values of a and b is the line -2x+y=b tangent to the curve y=ax^3 when x=-2?

Answer 1

start by equating the slope of given tangent line to the derivative of given curve

Answer 2

slope of -2x+y=b is ?

Answer 3

just messin

Answer 4

whuttt

Answer 5

lol :P

Answer 6

your slope is \(2\)

Answer 7

\(y=ax^3\)
\(y'=3ax^2\)
\(2=3a(-2)^2\) solve for \(a\)

Answer 8

Aha, Thank you so much!! then I take it from there! You two know your stuff, thank you!