Question 657656: My problem is y = -2x. Trying to find the point of each to graph besides the origin of(0,0).
y = 0
0 = -2x add 2 to each side gives y = 2
so my Y axis is (0,2)
x = 0
y= -2(0)
y= 0
This is where I get confused....
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
If  , then  is true. But why would you add 2 to both sides?
You have just made a bigger mess, and adding 2 to each side does NOT give  .
If you multiply both sides by  , then you get
proving that the origin is, indeed, a point included in the solution set of the original equation.
Now, instead of letting  take on values, vary the independent variable,  .
Let  then \ =\ -2) , hence (1,-2)
Let  then \ =\ 2) , hence (-1,2)
and so on for as many different values of as tickles your fancy.
John
My calculator said it, I believe it, that settles it
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