A swimming pool has two pipes coming in. One fills the pool in four hours, the other in six hours. An outlet pipe empties the pool in five hours. The outlet pipe is accidentally left open. In how many hours is the pool full

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take good notes.

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use mnemonics and other tricks.

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step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4