Introduction to Equation

1. What do you call 3x + 5 = 17?

• a. Expression

• b. similar terms

• c. equation

• d. inequality

Which of the following expressions represent similar terms?

• a. 7x, 3y, 5z

• b. 5m, 5n, 5p

• c. 4x, 5x, 6x

• d. a, b, c

Which of the following are equivalent expressions?

• a. 8x – 6 and 2(4x – 3)

• b. 4x + 3x + 5 and 2 (4x - 3 )

• c. 5m + 2m + 8 and 5m ( 2m + 8 )

• d. 2 ( x + 1 ) + 3 and 2x + 2 + 6

1. What is the simplify expression for 3 ( x + 7 )?

• a. 3x + 7

• b. 3x + 21

• c. x + 21

• d. 3x + 3

1. Evaluate the expression 5x² + 2y when x=3 and y=5

• a. 25

• b. 35

• c. 45

• d. 55

1. Which is an example of isolate the variable?

• a. 3x + 2 = 2x + 5

• b. 6x + 2x + 4 = 7x – 5

• c. 2x + 3x = 10

• d. x = 5x + 8

1. Determine the number of solution for 3x = 12.

• a. no solution

• b. one solution

• c. infinite many solutions

• d. cannot determine

Determine the number of solution for 3x+2 = 3x+5.

• a. no solution

• b. one solution

• c. infinite many solutions

• cannot determine

Determine the number of solution for 7x+2 = 7x+2

• a. no solution

• b. one solution

• d. infinite many solution

• cannot etermine

What is the coefficient of the variable X ?

• a. 0

• b. 1

• c. 2

• d. 3