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OpenStudy (anonymous):
How many solutions does the following system have? 4x + 8y = 16 3x + 6y = 9
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OpenStudy (mertsj):
Are the lines parallel?
OpenStudy (mertsj):
That is...do they have the same slope?
OpenStudy (anonymous):
its no sulotion
OpenStudy (mertsj):
yes. you are correct. Good for you!
OpenStudy (anonymous):
but i still need to work it out and i have no idea how
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OpenStudy (mertsj):
Solve both equations for y.
OpenStudy (anonymous):
subtract?
OpenStudy (mertsj):
That is slope-intercept form. Then you will be able to see that they have the same slope but different y intercepts and are therefore parallel.
OpenStudy (anonymous):
im horrible at thiese
OpenStudy (mertsj):
I will demonstrate the first one then you can do the second one.
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OpenStudy (anonymous):
thanks for the help
OpenStudy (mertsj):
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