Question

5. Which is the graph of 3x - 6 = 21?-6-5-4-3-2-1 0 1 2 3 4 5 6 7 8 9 10+-6-5-4-3 -2 -1 0 1 2 3 4 5 6 7 8 9 10-6-5-4-3 -2 -1 0 1 2 3 4 5 6 7 8 9 10-6-5-4-3 -2 -1 0 1 2 3 4 5 6 7 8 9 10

Answer 1

Given : | 3x - 6 | = 21

So,

3x - 6 = 21 OR 3x - 6 = -21

3x = 27

x = 27/3 = 9

And if 3x - 6 = -21

3x = -15

x = -15/3 = -5

So, x = -5 or 9

The answer is the second option