y = 3x - 1 and y = 3x + 3. I think there's infinity solutions to this system *need sum 1 to corrct again*

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eyust707 · Answer

well we gotta be careful

eyust707 · Answer

in the last example there was many solutions because the two lines fell right on top of each other

eyust707 · Answer

in any other case when you have two lines there will only be one solution

eyust707 · Answer

or possibly no solutions if the lines are parallel

anonymous · Answer

Thats whre I got confused :/

eyust707 · Answer

two lines are parallel if the slope is the same

eyust707 · Answer

what is the slope of the first one?
what about the second one?

eyust707 · Answer

both are 3 so they are parallel

eyust707 · Answer

but we gotta make sure they arent the same line

eyust707 · Answer

y=mx + b
b says where it crosses the y axis.

they cross the y axis in different spots

so that means they are parallel and they are different lines

eyust707 · Answer

therefore there are no solutions