SOLUTION: is 2y = x - 4 a function

Question 1162860: is 2y = x - 4 a function
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
yes
solve for y to get:
y = (x-4)/2
since this is a linear equation, there is only one value of y for each and every distinct value of x.
here's a definition.
A function is a relationship between two variables. The first variable determines the value of the second variable. The value of the first variable corresponds to one and only one value for the second variable.
you can see from the equation that each value of x will generate one and only one value of y.

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