Question 105559
i have to graph this equation. 6X-3Y = 9,
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Quite frankly, I have no idea what you are doing, but to graph this:
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Put in the general "y="
6x - 3y = 9
-3y = -6x + 9
We want y to be positive, multiply eq by =-1
+3y = +6x - 9
Divide equation by 3 and you have:
y = 2x - 3
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With this equation, substitute values for x and find y, make a table from these values.
You only need two since it is a straight line but here are 3:
If x = -3
y = 2(-3) - 3
y = -6 - 3
y = -9
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If x = 0:
y = 2(0) -3
y = -3
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If x = +3
y = 2(3) - 3
y = 6 - 3
y = +3
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The table:
 x | y
--------
-3 |-9
 0 |-3
+3 |+3

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If you plot this, it should look like this:
{{{ graph( 300, 200, -10, 10, -10, 10, 2x-3) }}}
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Did this shed any light on this graphing stuff for you?