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Graphing Lines
5 páginas
Publicado por
Ram Singh
Graphing Lines
Graphing linear equations is pretty simple, but only if you work neatly.
If you re messy, you ll
often make extra work for yourself, and you ll frequently get the wrong answer.
I ll walk you
through a few examples....
[Más]
Graphing Lines
Graphing linear equations is pretty simple, but only if you work neatly.
If you re messy, you ll
often make extra work for yourself, and you ll frequently get the wrong answer.
I ll walk you
through a few examples.
Follow my pattern, and you should do fine.
Graph y = 2x + 3
First, you draw what is called a "T-chart": it s a chart that looks a bit like the letter "T":
The left column will contain the x-values that you will pick, and the right column will contain the
corresponding y-values that you will compute.
Label the columns: The first column will be where you choose your input (x) values; the
second column is where you find the resulting output (y) values.
Together, these make a
point, (x, y).
Pick some values for x.
It s best to pick at least three value, to verify (when you re graphing)
that you re getting a straight line.
("Linear" equations, the ones with just an x and a y, with no
squared variables or square-rooted variables or any other fancy stuff, al
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