How do you solve and graph #abs(p+2)>7#?

1 Answer
Sep 8, 2017

Answer:

See a solution process below:

Explanation:

The absolute value function takes any term and transforms it to its non-negative form. Therefore, we must solve the term within the absolute value function for both its negative and positive equivalent.

#-7 > p + 2 > 7#

Subtract #color(red)(2)# from each segment of the system of inequalities to solve for #p# while keeping the system balanced:

#-7 - color(red)(2) > p + 2 - color(red)(2) > 7 - color(red)(2)#

#-9 > p + 0 > 5#

#-9 > p > 5#

Or

#p < -9# and #p > 5#

To graph this we will draw a vertical lines at #-9# and #5# on the horizontal axis.

The lines will be dashed lines because the inequality operators do not contain "or equal to" clauses.

We will shade to the left and right side of the lines because the inequality operator contains "less than" and "greater than" clauses respectively:

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