how do you graph systems of equations
Place each in mx+b form
i dont know how
give me example, and I show you that way
x+y=18
Okay, you place x over on one side. y=-x+18. so, m=-1, and b = 18
ok but what the slope and y intercept
Okay, slope is simply rise over run. In this case, the rise (or, how high you go in the y direction) is down 1. The run (or how far you go in the x direction) is to the right 1. the y intercept is where the line cuts the y axis.
so 1/1
yes sir, boss man/woman
twhats the x intercept
No, that's where you can take any point, usually the y intercept, and go down on, and to the right one.
ok but i have two the other one is 3x-y=10
okay, so, get y by itself. so, it'll look like y=3x-10. Now, try to make line with that :)
y=10 x= 3.33
No, keep everything in y=mx+b form. So, the slope is 3/1, and the y intercept is (0,-10)
okee i am really bad at this and my math teacher is really mean we had a sub so and this is some stuff i really dont understand
how do you graph 80x+40y=400 and 20x+80y=420
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