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#### Online Quiz (WorksheetABCD)

Questions Per Quiz = 2 4 6 8 10

### Grade 7 - Mathematics3.1 Coefficient

Algebraic Expression:
• An expression is a meaningful collection of numbers, variables, and signs, positive or negative, of operations that must make mathematical and logical sense.
• Expression contain any number of algebraic terms
• Terms are separated by addition or subtraction
• Expression use signs of operation—addition, subtraction, multiplication, and division.
• It do not contain an equality sign (=)
Example
 Expressions Not expressions: x + y 7xy a + b -2/3s2 a + • b as it contains two operations in between the terms y = 2x – 1 contains equal sign

Algebraic Equation
• It is a mathematical statement or algebraic expression with an equal sign.
• Example:
x + y = 0
7xy = 0
a + b = 0
-2/3s2 = 0 4ab = 23

Example: Write the coefficient of x in 7x.
Solution: The coefficient of x in 7x is 7

Example: Write the coefficient of (7x+9) in 3(7x+9).
Solution: The coefficient of (7x+9) in 3(7x+9) is 3

Directions: Find the coefficient of the given problems. Also write at least ten examples for algebraic expressions, algebraic equations and coefficients.
 Q 1: Write the coefficient of (9x+2) in 9(9x+2)?Answer: Q 2: What number is the coefficient of x3 in the expression 23x3?Answer: Q 3: What number is the coefficient of z in the expression 2x + 3y + z?Answer: Q 4: What number is the coefficient of x in the expression 5x − 4y − z? Answer: Q 5: Write the coefficient of (x+2) in (9/8)(x+2)?Answer: Q 6: What number is the coefficient of z in the expression 5x − 4y − z?Answer: Q 7: What number is the coefficient of y in the expression 2x + 3y + z?Answer: Q 8: Write the coefficient of (2x+3) in 7(2x+3)?Answer: Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!