# Math Help - Help me please

I could not be more lost in trying to figure out this problem. How do I solve it?

Determine whether 1 - y = 2x is a direct variation.

2. ## Direct Variation

When two variable quantities have a constant (unchanged) ratio, their relationship is called a direct variation.

The general form of a direct variation is y = kx, where k is the constant of variation which describes the relationship between variables y and x.

1 - y = 2x can be written as y = 2x + 1

I beleive that the '+ 1' makes the equation not a direct variation.

A test for checking the situation could be as follows:
If you double x and y also doubles then it is a direct variation. In this case it is not.

3. Thank you for your help