you only need part of the given piece by piece: 2x+y=3x=2y-1
take 2x+y=3x
x=y
now you take the other half
3x=2y-1
3(y)=2y-1
y=-1
note that x=y, so x=-1 as well
in conclusion both x=-1, y=-1
The slope of the line of 2x plus 2y equals 7 is (7/2x - 1).
-2x=2y+5 +2x -2y -2y=2x+5 /-2 y=-1/1+2.5
(-1, 5)
(-1, 5)
(2, 1)
(4, -1)
(-1, 0)
If: 12 = 2y+x then y = -1/2x+6 So: y = 2x+4 and y = -1/2x+6 which means that they are perpendicular lines
y=-3/2x + 1/2
(12, 1)
1 solution
2x + 2y=-2 (Dividing it by two)x+y=-1 (By transposition)x=-y-1