Plugging in Numbers for Variables

Plugging in a number for a variable is called

• operation

• evaluation

• substitution

• solving

b² + 4
when b = 3

• 10

• 12

• 13

• 11

a² - b²
Evaluate if a=4 and b =2

• 4

• 20

• -4

• 12

y + z²

when y = 5 and z = 2

• 7

• 9

• 29

• 14

• 3

• 6

• 0

• 2

• 216

• 270

• 140

• 7

• 15

• 29

• 32

• 8

a² - d when a = 7, d = 2

• 47

• 32

• 18

• 0

a + c - b

when a = 2, b = 1, c = 9

• 4

• 14

• 10

• 8

• 6

• 7

• 14