3 years ago

Is 2xy = -8 a function

2 answers:

4 0

2xy=-8

You can find a value of x and a value for y that would make that true, so YES it is a function.
Example:
2(2)(-2) = -8

rodikova [14]3 years ago

3 0

No, because it <em>is not a straight line when graphed.</em>

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A light shines from the top of a pole 50ft high. a ball is dropped from the same height from a point 30 ft away from the light.

belka [17]

The speed of the ball is
ds/dt = 32t
At t =1/2 s
ds/dt = 16 ft/s
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x = 345 ft

50 / (50 - s) = (30 + x)/x
Taking the derivative and substituing
ds/dt = 16
and
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