The difference in the x-coordinates of two points is 3, and the difference in the y-coordinates of the two points is 6. Wha
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You may recall that you can't take the square root of a negative number (if you want a real number). So, the area under the square root, also known as the radicand, must be zero or positive. This is how we restrict the domain.
We write the inequality
.
B
We write the inequality
B