HELP! (It involves graphing equations?)
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HELP! (It involves graphing equations?)

[From: ] [author: ] [Date: 11-05-03] [Hit: ]
wolframalpha.com/input/?if you graph them and look at the point where they intersect you have found the answer. To me it looks like (3,Note: if they were parallel they would never intersect and have no solution, if they were the same line then they would intersect infinitely many times.......
I'm really terrible at doing this, could someone PLEASE EXPLAIN how you got your answer? Thanks :)

Graph each system and determine the number of solutions it has. If it has one solution, name it.

1.) 3+y= -3
3x+y= 3

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since these are linear and not the same line and they are not parallel they will have one solution. In order to graph it is easier if we solve for y:

1.)
3+y= -3
y = -6

3x+y= 3
y= -3x+3

Graph:
http://www.wolframalpha.com/input/?i=plo…

if you graph them and look at the point where they intersect you have found the answer. To me it looks like (3,-6)

Note: if they were parallel they would never intersect and have no solution, if they were the same line then they would intersect infinitely many times.
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