How do you graph #-3x-y=2# by plotting points?
1 Answer
Mar 29, 2016
y=-3x-2 graph{y=-3x-2 [-10, 10, -5, 5]}
Explanation:
To get to y=mx+b form, first add 3x on both sides to get rid of the -3x: -y=3x+2
Next, divide both sides by -1 to make the -y a +y: y=-3x-2
As you know, in y=mx+b m means slope and b means y-intercept, which in this case is -2. So, the line must cross (0,-2). As its slope is -3, you should -1 to x and add 3 to y repeatedly until you get a line.
Hope this helps.
