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3x+y=9
2x+y=8
The graphing method

Sagot :

no thats standard form. to graph it you need to turn it into slope-intercept form which is y=mx+b where m is the slope (rise over run) and b is the y intercept.

for example to get it for 3x+y=9 you would take away the 3x and put it on the other side.
 3x+y=9
-3x    -3x and that would become:

y= - 3x+9

thats graphing method.


Panoyinid
3x + y = 9 ⇒ 6x + 2y = 18
2x + y = 8 ⇒ 6x + 3y = 24
                            -1y = -6
                             -1     -1
                               y = 6
                       3x + 6 = 9
                             -6   -6
                             3x = 3
                              3     3
                               x = 1
                         (x, y) = (1, 6)

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