Question 700783
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How do I find y for this equation? 2x-y=1 I don't understand how to solve it and then graph it along with y=-3.
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<pre>
1.  Add "y" to both sides. You will get an equivalent equation

    2x = 1 + y.


2.  Subtract "1" from both sides you will get an equivalent equation

    2x - 1 = y.


3.  It is equivalent to 

    y = 2x - 1.


4.  It is your answer.
</pre>

Solved.


This procedure of three steps is called "to isolate y".