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Question 57304This question is from textbook
: this question has to do with direct variation:
The graph of a direct variation may pass through (-2,4)
True or false. Explain
I think its true because couldn't direct variations be any ordered pairs but 0?? Could I get confirmation on this?
This question is from textbook
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The graph of a direct variation may pass through (-2,4)
True or false. Explain
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If x varies directly with y, y=kx
Now, could y=4 when x=-2?
If the answer is yes, then:
4=k(-2)
and
k=-2
But K cannot be negative
so if x=-2 y cannot be 4.
Cheers,
Stan H.
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