Find the equation of the line through (-1, 3) and (4, 1)

[yohanson77]

Hi, was hoping someone could shed some light?

Q. C is the point (-1, 3) and D is point (4, 1). Draw the line CD, and use your sketch to choose the option corresponding to the equation of the line through C and D.

Options:

A. 2y = 13 - 5x
B. 5y = -2x - 2
C. 5y = 8 - 2x
D. 5y = 13 - 2x
E. 5y = 17 - 2x
F. 13y = - 5x

I get none of the above. Please help. Thank you!

Yours,
yohanson

 

[tkhunny]

What do you get, and how do you get it?

 

[yohanson77]

Getting this

What do you get, and how do you get it?

I think i've got it, is it right?

y=-2/5x + 2.6

5y = -2x + (2.6x5)

5y = -2x + 13

5y = 13 - 2x

Answer 5y = 13 - 2x

tkhunny you have been a star for helping me out with my questions.

 

[tkhunny]

It looks like you just pulled the equation out of the air. Actually, I'm quite curious why you ended up with "2.6". Share?