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Using the trend line equation, Y=25X+150 What x value will be needed to get a 900 for y?

User Runec
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To find what x value will be needed to get a 900 for y, we just have to rewrite the equation in order to isolate x on one side, then replace 900 for y and calculate the value of x, we can do it like this:

y=25x+150 , subtract 150 on both sides

y - 150 = 25x + 150 - 150

y - 150 = 25x, divide both sides by 25

(y-150)/25 = 25x/25

(y-150)/25 = x

Now we can calculate the value of x from the expression:


x=(y-150)/(25)

Now let's replace 900 for y:


x=(900-150)/(25)=(750)/(25)=30

Then, the value of x needed to get 900 for y is 30

User Ikh
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