How do you determine if $2 x + y = 7$ $2x+y=7$ is a function?

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Answer 1 · 2015-10-04T23:37:48

A function is anything that can pass the vertical line test, or when for every "y" there is only one "x" value. Typically, all lines are functions.

2x+y=7 is a function because it is in the form of y=mx+b (slope-intercept form). If you rewrite the function, you should get y= -2x+7.

How do you determine if 2x+y=72x+y=7 is a function?