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Start by drawing the boundary curve. Recall that the domain of radical functions only includes values for which the radicand is non-negative.
To graph the given inequality, we will start by drawing its boundary curve.
y=sqrt(x-2)
To do so, we first need to find the domain. For radical functions, the domain only includes values for which the radicand is non-negative.
Now we will make a table of values, using a variety of values for x greater than or equal to 2.
| x | sqrt(x-2) | y=sqrt(x-2) |
|---|---|---|
| 2 | sqrt(2-2) | 0 |
| 3 | sqrt(3-2) | 1 |
| 4 | sqrt(4-2) | ≈ 1.41 |
| 5 | sqrt(5-2) | ≈ 1.73 |
| 6 | sqrt(6-2) | 2 |
| 7 | sqrt(7-2) | ≈ 2.24 |
| 8 | sqrt(8-2) | ≈ 2.45 |
Let's plot the points and connect them with a smooth curve.
Finally, we can determine the region to shade using a test point. If the test point produces a true statement when substituted into the given inequality, we will shade the region that contains it. If it produces a false statement, we will shade the region which does not contain the test point. We will use the point (3,0).
x= 3, y= 0
Subtract term
Calculate root
Since the point produced a true statement, we will shade the region that contains (3,0). Note that we are not given a strict inequality, so the curve will be solid.