ShmoopTube

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Thank you We sneak in and here's your shmoop du

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jour brought to you by the function of acts Ironically

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excess family is pretty dysfunctional All right Well given that

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f of ax equals the square root of five x

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plus fifteen select a point on the graph below Where

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f of x is equal to zero parentless that's where

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this thing he added up Root of five zero Where

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is a hero All right so this question asked us

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to take a function and figure out where that function

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will be Nothing Nada zero cochin opened eyes on the

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prize We got this way Want fx to be zero

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Then we can replace the fx with zero to get

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the equation Zero equals the square root of five x

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plus fifteen Well if we square both sides we get

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still zero over here and over here we get just

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five x plus fifteen Well subtract fifteen from both sides

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to get the negative Fifteen equals five x then divide

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both sides by five Get x equals negative three so

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that's our x coordinate Negative three But what about our

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y coordinate Well since f of negative three equals zero

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the point we're looking for must be negative Three zero

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on this guy right here is the white corner though

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Three units left along the x axis and that's It

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there's our point Now all we have to do is

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get ex out of that questionable living environment and everything 00:01:34.218 --> [endTime] will be just hunky dorey

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