Mathematics
9 Online
OpenStudy (anonymous):
Which graph is the line y=-1/5x-1?
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OpenStudy (anonymous):
@TheSmartOne could you help?
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TheSmartOne (thesmartone):
Hi there, I'll try to help you! :D
OpenStudy (anonymous):
okay Thank You!
TheSmartOne (thesmartone):
|dw:1448397673097:dw|
TheSmartOne (thesmartone):
so does your line have a positive slope or a negative slope?
OpenStudy (anonymous):
Negative?
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TheSmartOne (thesmartone):
correct, so which answer choices show a positive slope?
those that show a positive slope, we can eliminate them :)
OpenStudy (anonymous):
C and D?
TheSmartOne (thesmartone):
well, actually, it seems like they all have negative slopes so we can't eliminate any of them.
OpenStudy (anonymous):
oh lol obviously... I thought it was B
TheSmartOne (thesmartone):
ok, since the equation is in the from y=mx +b
plug in x = 0 and let's solve for y.
That will tell us the y-intercept. :)
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OpenStudy (anonymous):
Im confused? would we have to divide
OpenStudy (radar):
Both B and D have a Y intercept of -1, they both have negative slopes.......but only 1 is correct.
OpenStudy (anonymous):
So B and D aren't correct?
TheSmartOne (thesmartone):
One of them is correct. :)
OpenStudy (anonymous):
I thought it was B?
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TheSmartOne (thesmartone):
B is correct :)
OpenStudy (anonymous):
Thank you guys both! Could you help with one more?
TheSmartOne (thesmartone):
sure, post another question :)