Consider the subtraction expression 9 + (–10) on the number line shown. explain how you would evaluate the expression on the number line. a. begin at 10 and move 9 units to the left b. begin at 10 and move 9 units to the right c. begin at 9 and move 10 units to the right d. begin at 9 and move 10 units to the left

9+(-10) is the same as saying 9-10.

You would start at your fires number, 9.

When subtracting you move to the left.

Start at 9 and move 10 units left. D

The answer is D

linear pair postulates

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: