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Mathematics
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OpenStudy (sparklestaraa):
The graph below represents which system of inequalities?
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OpenStudy (sparklestaraa):
@Directrix
OpenStudy (sparklestaraa):
@Jhannybean
OpenStudy (jhannybean):
You know the y intercept is 3, by looking at the y-axis, therefore eliminate any answer choices that state otherwise.
OpenStudy (jhannybean):
Since it's a solid line and not dashed, you know it's either \(\le\) or \(\ge\) , so then eliminate any choices that state otherwise.
OpenStudy (sparklestaraa):
its C ?
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OpenStudy (sparklestaraa):
No wait sorry is A B or D not C
OpenStudy (sparklestaraa):
@Jhannybean
OpenStudy (jhannybean):
Now analyze the slope for each graph, Notice how one is positive, and one is negative.
OpenStudy (jhannybean):
|dw:1423336392169:dw|
OpenStudy (jhannybean):
So the slope of that line is -2.
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OpenStudy (jhannybean):
Now find the slope of the other line, but this time you'll find that you have a positive slope.
OpenStudy (campbell_st):
one method is pick a point that seems to be in both inequalitites (0, 0)
then substitute x = 0 and y = 0 to find the pair which are true
OpenStudy (sparklestaraa):
oh its A :D @Jhannybean
OpenStudy (jhannybean):
You got it \(\checkmark\)
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