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State if the given graph is correct. If not, explain how you would change it. (Photo is attached) PLS HELP

State if the given graph is correct. If not, explain how you would change it. (Photo-example-1
User Natdico
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8.7k points

1 Answer

5 votes

Answer: The graph is not correct

See explanation below.

Let's solve for x.


3\text{x} - 2(\text{x}+4) \ge 3\text{x}-(4\text{x}+9)\\\\3\text{x} - 2\text{x}-8 \ge 3\text{x}-4\text{x}-9\\\\\text{x}-8 \ge -\text{x}-9\\\\\text{x}+\text{x} \ge -9+8\\\\2\text{x} \ge -1\\\\\text{x} \ge -1/2\\\\

The inequality sign does not flip because we didn't divide both sides by a negative number.

To graph this on a number line we do two things:

  • Plot a closed filled in circle at -1/2 on the number line. This is exactly halfway between -1 and 0.
  • Shade to the right of the filled in circle to represent values that x = -1/2 or x > -1/2.

The graph is shown below.

State if the given graph is correct. If not, explain how you would change it. (Photo-example-1
User Quang Linh Le
by
8.3k points