(2x-y=9)
(4x-2y=11)

Question

(2x-y=9) 
(4x-2y=11)

anonymous · Answer

Simple question, what are the slopes of the two lines you have there?

anonymous · Answer

2x n 4x?

radar · Answer

The slope in both are the coefficient of x when equations are in the slope intercept form.

radar · Answer

2x-y=9     or y=2x + 9    slope is 2 as it is for the second equation.

anonymous · Answer

thanks radar

radar · Answer

Wait a minute, i erred  y=2x-9.

radar · Answer

slope is still 2.

anonymous · Answer

it is ok

radar · Answer

2nd equation 4x-2y=11
2y=4x-11
y=2x - 11/2    slope is 2

anonymous · Answer

for the 2x would it be y=2x-9?

radar · Answer

Yes

radar · Answer

both equations have equal slope m or m=2, thus the two lines are parallel.  I digress lol

anonymous · Answer

haha was trying to follow aexample inthe book haha still not making any senseto me tho (hate college algebra:)

radar · Answer

It takes practice.  good luck with it.

anonymous · Answer

thanks

anonymous · Answer

@sassyst12  Just to make sure, do you see why finding that both equations have the same slope is important to trying to solve the system of equations?

anonymous · Answer

my only question is how he got it

anonymous · Answer

Ok, just making sure, because the answer to being given
(2x-y=9) 
(4x-2y=11)
is not that they both have the same slopes, though the fact that they do will determine your answer...

anonymous · Answer

oh ok

anonymous · Answer

Ok, you understand what the answer is .... or 
Ok, I thought that the two slopes was the answer?