Question

Graph -27x+18y=54??????????

Answer 1

Answer:

There should be 3 points that you have.  (0, 3), (2, 6), and (-2, 0)

Step-by-step explanation:

Alright so since everything there is divisible by 9 you can divide each number by 9 to get:

-3x + 2y = 6

Now, to graph this you need to put it in y = mx + b form. So, add the 3x to both sides of the equation.

-3x +2y = 6

+3x            +3x

2y = 3x + 6

Now you would divide 2 on both sides because you need y to be alone, to get:

y = 3/2 x + 3

Now Graphing:

Since 3 is positive that is your y-axis.  So put a dot on + 3 on the y-axis.  That's your (0, 3) point.  

Then 3/2 is your slope.  Slope is rise / run.  So you start at your dot from the y-axis go up 3 (because that's your rise from slope) then you go to the right 2 (therefore, your run) then place a dot there.  This is your (2, 6) point)

Usually you want to do the negative side of that also.  To do that you would once again start at the 3 (y-axis point).  Now you would pretty much make your slope negative.  Starting at 3, you would go down 3 (your rise for slope) then go to the left 2 (your run for slope).  This is your (-2, 0) point.  

Do you understand it?