Question 128882: Please help me graph these equationss 3x-y=9 3x+2y=12
y=2/3x+4 y=-3/2x-6 Thank You!!!!
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website! If you know how to do one, you know how to do them all.
Step 1: Pick a value for x. It doesn't matter what it is, so make it something that makes the arithmetic easy, like 0 or 1.
Step 2: Substitute that value into your equation and then calculate what y must be for that value of x.
If you picked 0 for x, then:
So when x is 0, y is -9.
Now, repeat steps 1 and 2 using a different value for x. Let's do it with x = 1.
So, when x is 1, y is -6.
Now, take these pairs of numbers that you developed and put them into ordered pair form: (0,-9) and (1,-6).
Plot these two points on your graph. Then draw a line through the points and you are done.
Follow this same procedure for the other problems.
|
|
|
