SOLUTION: hi,i am so confused in math and my main struggle is graphs can you help me please

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Question 269390: hi,i am so confused in math and my main struggle is graphs can you help me please
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
A graph is just a way to show every possible
way that 2 unknown quantities can be related
Every point on a graph is an (x,y) point
the x was how you got to that point going
horizontally. The y is how you got there
going vertically.
To build understanding:
y+=+7 is an equation, it just doesn't involve x
It should say to you "I don't care what x is -all
I care about is that y+=+7
Now I'll plot it:
+graph%28+500%2C+500%2C+-2%2C+5%2C+-2%2C+10%2C+7%29+
Looking at the graph, every point on the horizontal line
says "I'm at (x,7), and I don't care what x is, because
x can be anything you want. If you want x to be 3.7025,
then I will be the point (3.7025,7), and that will be
on the line y+=+7
Now suppose I draw the line y+=+0. That's the
horizontal line that says "I don't care what x is as
long as y is always zero.
Any point on this line looks like (x,0), and it's
actually the x-axis
If I choose (4.7319,0), that is on the x-axis
Does this help any? Always go back to what
you're sure of and build your understanding
up to where it should be -there's no other way