Question

Find the slope of the line.
(1,4) (2,1)
A.-3
B.3
C.-1/3
D.1/3
please help!

Answer 1

I don't know is it -1/3?

Answer 2

m = tan θ = ( y2 - y1 ) / ( x2 - x1 )

m = tan θ = ( 1 - 4 ) / ( 2 - 1 ) = - 3 / 1 = - 3

If you have more questions like this go on:

wolframalpha.c o m

when page be open in rectangle type:

slope and coordinats

in this case type:

slope (1,4) (2,1)

then click option =

you will see answer

Answer 3

I see Bosnian gave you a very detailed explanation when he answered
your previous question, which is almost identical to this one.
Show me how you worked it out, and and will reply.

Answer 4

wolframalpha.com doesn't work :(