Question

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

Answer 1

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