SOLUTION: plot a graph 1)3x+2y=4 9x+6y=16 also show working (values of x and y)

Algebra ->  Coordinate-system -> SOLUTION: plot a graph 1)3x+2y=4 9x+6y=16 also show working (values of x and y)      Log On


   



Question 626615: plot a graph
1)3x+2y=4
9x+6y=16

also show working (values of x and y)

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
plot a graph
Put both equation in the slope/intercept form
1)
3x + 2y = 4
2y = -3x + 4
y = -3%2F2x + 4%2F2
y = -1.5x + 2; red
the table for this equation, (choose a value for x, then find y)
x | y
-------
-2 |+5
0 |+2
+2 |-1
and
9x + 6y = 16
6y = -9x + 16
y = -9%2F6x + 16%2F6
y = -1.5x + 8%2F3
y = -1.5x + 2.67; green
the table for this equation
x | y
-------
-2 |+5.67
0 |+2.67
+2 |-.33
:
Note the slopes are both -1.5, the lines are parallel
+graph%28+300%2C+200%2C+-5%2C+5%2C+-5%2C+5%2C+-1.5x%2B2%2C+-1.5x%2B2.67%29+