Quiz #4 - Absolute Value Equations

Solve the following equation:

| 2x + 9| = 15

• x = 3

• x = 3 or x = −12

• x = 3 or x = −6

• x = 6 or x = −12

Solve the following equation:

|2a − 10| = 6

• a = 8 or a = 5

• a = 8 or a = −2

• a = 8

• a = 8 or a = 2

Solve the following equation:

|v + 8| − 5 = 2

• x = −1 or x= −15

• x = -15 or x = 15

• x = -1 or x = -5

• no solution

What's a way to define absolute value?

• The value of a number

• The distance of a number from zero

• The opposite of a number

• The multiplicative inverse of a number

Tags

CCSS.6.NS.C.7C

What is the reason that absolute value is always written as a positive?

• Absolute value is talking about numbers so it must be positive.

• Absolute value is like a clock it has only positive numbers.

• Absolute value does not always have to be positive.

• Absolute value is talking about distance, distance is always measured by positive numbers.

Tags

CCSS.6.NS.C.7C

Solve the following equation:

|−2n| + 10 = −50

• x = 30 or x = -30

• x = -5 or x = 5

• x = 20 or x = -20

• No Solution

Solve the following equation:

| x – 3 |= 0

• x = 3

• x = 3 or x = -3

• x = -3

• No Solution

How many solutions does the equation have?

4|m| = -20

• no solution

• one solution

• two solutions

How many solutions does the equation have?

|c - 7| = 2

• no solution

• one solution

• two solutions

How many solutions does the equation have?

-4 = |-6v| - 4

• no solution

• one solution

• two solutions