y = 2x -1
y = 5x -13
So: 5x -13 = 2x -1
5x -2x = 13 -1
3x = 12
x = 4 and by substituting y = 7
7x + y = 4y = 4 - 7x
You should write the question out as z= (y/x). To solve this, you would multiple x to the other side to get y alone. Then you would multiply z to the other side. z= (y/x) Given xz= y x= y/z
y=±√15
(20 - x)/5
To solve for y, divide both sides of the equation by -0.8.
-y + y equals 0.
For y - 2y - 3y equals 0, y equals 0.
b = y - mx.
y= -2x
y - 3 = 0 y = 3
y=x+4
y = -6
y=5-x
-3
16
y = mx + b
Y-2x1 would merely be Y-2.