Vocabulary
What is variable in algebra?
a) A number by itself
b) A letter that represents a unknown value
b) A letter that represents a unknown value
Which one is a constant?
a) x b) 7b c) 13
13
72
13-7=?
6
A number by itself is ?
a) a variable b) a coefficient c) a constant
c) a constant
Identify all the variables from below
-2, 7c, 5q
c and q
Evaluate 6c-10 when c=7
32
9 times 7 equal?
63
A number with a variable is ?
a) a variable b) a coefficient c) a constant
b) a coefficient
Find all the coefficients.
7, -6, 8c, 0, 3t, 13x
8, 3, and 13
Evaluate 6a-8b when a=6 and b=4
4
11+23-8=?
26
Find all the constants and coefficients.
14x, 22b, 36, 5, 0, 16y
constant: 36, 5, 0
coefficient: 14, 22, 16
Evaluate 8+6x-5y when x=5 and y=7
3
36 ÷ 9 ⋅ 6 = ?
24
Find all the variables and coefficient.
c, 14, 7x, 9s, 23
variable: c, x, and s
coefficient: 1, 7, and 9
Evaluate 8t-5s-3r when t=5, s=4, and r=3
11