Question

If f(2) = 3 and f'(2)=-1 find an equation of the tangent line when x = 2. How would I start this??

Answer 1

use the point slope formula
\[y-y_1=m(x-x_1)\] with
\[x_1=2,y_1=3, m=-1\]

Answer 2

ahh, thank you. i got y=5-x?

Answer 3

i didn't do it

Answer 4

\[y-3=-(x-2)\]
\[y-3=-x+2\]
\[y=-x+5\] yup

Answer 5

You need to learn order your equation by variable

Answer 6

thank youu! your explanation was very helpful!

Answer 7

the form is y = mx + b

Answer 8

@Quyen do like that to mention the right person!

Answer 9

There're so many great solver here, as long as you wish to learn, you'll be better in no time :) Now back to work !

Answer 10

:) thanks

Answer 11

You can post whole day whole night here, learning for FREE :)

Answer 12

it's awesome!

Answer 13

I agree with Chlorophyll
even though AP calculus will give credit for the other formula.
They will even award credit if you just substitute and do not simplify