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What is the number for thirty-nine million five thousand in standard form
1 answer:
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The slope is defined as
which means that you have the difference of the y coordinates of the two points at the numerator, and the difference of the x coordinates of the two points at the denominator.
So, if the two points have the same x coordinate, the denominator vanished, and the slope is not defined.
Since the only points with the same x coordinate are those in option c, that is the correct answer.