Question

question 10
when solving a system of inequalities, what is a test point?
it is a point in the coordinate plane that is used to determine which side of a line satisfies each inequality.
it is a point in the first quadrant of the coordinate plane used to determine whether the line is dashed or solid.
it is a point in the coordinate plane where the lines of the two (or more) inequalities intersect.
it is a point in the coordinate plane where the inequality symbols are switched from less than to greater than or vice versa.
question 11
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Explanation:

A test point is a coordinate chosen not on the boundary line of an inequality. Substituting it into the inequality shows which side of the line contains solutions that satisfy the inequality. The other options are incorrect: test points don't have to be in the first quadrant, don't determine line style, aren't intersection points of boundary lines, and don't relate to switching inequality symbols.

Answer:

It is a point in the coordinate plane that is used to determine which side of a line satisfies each inequality.