When doing graphs of inequalities, do you have trouble deciding whether to shade above or below the line?
Let me tell you something, you should never get the answer wrong.
These are so easy to check. All you need to do is plug in the coordinates (0,0) into the equation for the x variable and the y variable. This will help you with your shading.
If you plug in (0,0) into the equation and it works, then you know that (0,0) should be in the shaded portion.
If not, then it will be in the unshaded portion.
You will be right 100% of the time.
Let me tell you something, you should never get the answer wrong.
These are so easy to check. All you need to do is plug in the coordinates (0,0) into the equation for the x variable and the y variable. This will help you with your shading.
If you plug in (0,0) into the equation and it works, then you know that (0,0) should be in the shaded portion.
If not, then it will be in the unshaded portion.
You will be right 100% of the time.
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