4 years ago

−8x−y=4 −8x−y=9 How many solutions does the system have?

1 answer:

Nutka1998 [239]4 years ago

6 0

-8x - y = 4
-y = 8x + 4
y = -8x - 4....slope = -8, y int = -4

-8x - y = 9
-y = 8x + 9
y = -8x - 9...slope = -8, y int = -9

same slopes, different y int....means parallel lines...no solution <==

** just so u know..
same slopes, same y int = coincident lines = infinite solutions
different slopes, different y int = one solution

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