Complete the description of how to find the sums ?6 + 2 and ?6 + (?2) on a number line. To find ?6 + 2, start at 0. Draw the arrow for ?6. Then, from , draw the arrow for 2; the sum is . To find ?6 + (?2), start at 0. Draw the arrow for ?6. Then, from , draw the arrow for ?2; the sum is .

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step-by-step explanation:

answer:

a=9

step-by-step explanation: lmk if you need a explanation

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:

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.