Quadrant Problem

[blazer12]

For what value(s) of k
will the lines 2x+ 7y= 14 and kx−y = k + 1 intersect in thefirst quadrant?

EDIT:
i've expressed y in terms of x in the first equation

y=2-(2x/7) and plugged it into the second

kx+(2x/7)=k+3

 

[lookagain]

For what value(s) of k
will the lines 2x+ 7y= 14 and kx−y = k + 1 intersect in thefirst quadrant?

Please show some steps of what you know already here. Don't just present the problem.

Refer to this link:

http://www.freemathhelp.com/forum/threads/41537-Read-Before-Posting

 

[Steven G]

For what value(s) of k
will the lines 2x+ 7y= 14 and kx−y = k + 1 intersect in thefirst quadrant?

EDIT:
i've expressed y in terms of x in the first equation

y=2-(2x/7) and plugged it into the second

kx+(2x/7)=k+3

It is good that you solved for y in the 1st equation. Now do the same for the 2nd equation. Set the two y's equal to one another and solve for x.
What constraint do you want on x (it is to be in quadrant 1). Do this and get back to us with your result for a hint on the next part of this problem.

 

[blazer12]

It is good that you solved for y in the 1st equation. Now do the same for the 2nd equation. Set the two y's equal to one another and solve for x.
What constraint do you want on x (it is to be in quadrant 1). Do this and get back to us with your result for a hint on the next part of this problem.

i got
(k+3)/(k+2/7)=x