A few days ago
special types of linear systems help?????!!?
how do you know that
2x+y= -4
4x-2y= 8
has one solution, no solution, or infinitely many solutions???
please help!
Top 1 Answers
A few days ago
Favorite Answer
Put them in slope intercept form and solve for y.
y = -2x – 4
2y = 4x – 8 or y = 2x – 4
These equations simplify to two different equations, so the lines aren’t overlapping — they’re not the same line. So there aren’t infinitely many solutions.
The slopes of the two lines are different, so they’re not parallel either. If they’re not parallel, there must be a solution.,
Straight lines can intersect at only one point, so there has to be one solution.
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