How can I determine whether a system has one solution, no solution, or an infinite number? Also how can I determine a system is a pair of parallel lines, intersecting lines, or one line?

Question

mehek14 · Answer

Are you asking if you're given 2 equations or a graph?

mehek14 · Answer

Also, Parallel lines = no solution
         Intersecting lines = one solution
         One line = infinite solutions

felisha · Answer

graphing and 2 equations

mehek14 · Answer

Graph
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mehek14 · Answer

If you get 2 equations, you can solve by substitution or elimination

felisha · Answer

The 2 equations doesn't have an ordered pair so would it be elimination

mehek14 · Answer

No I'm saying, substitution and/or elimination are the 2 ways to solve

if you have :

y = 3 + x

and 

y = 5 - 2x

you can `substitute` the first equation instead of y in the second equation

3 + x = 5 - 2x