How do you graph the solution to -3(p-7)>=213(p7)21 on a number line?

1 Answer
Mar 11, 2017

p>=0p0

Explanation:

Distribute the bracket.

-3p+21>=213p+2121

"Isolate "-3p" by subtracting 21 from both sides"Isolate 3p by subtracting 21 from both sides

=3pcancel(+21)cancel(-21)>=21-21

rArr-3p>=0

rArrp>=0" is the solution"

To show the solution on a number line. Place a color(blue)"filled in circle" at zero. This indicates the solution can equal zero. Draw an color(blue)"arrowed line" from zero to the right indicating the direction of the solution.

If not equal to zero we use an color(blue)"open circle" at zero.

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