Function Notation Warm Up

If f(x) = x+2 then f(3)=

• f(3)=3

• f(3)=4

• f(3)=5

• f(3)=6

If f(x) = x-5 then f(16) =

• f(16) = 21

• f(16) = 11

• f(16) = 9

• f(16) = 10

If f(x) = 2x then f(6)=

• f(6)=8

• f(6)=4

• f(6)=12

• f(6)=14

If f(x) = 5x then f(11) = 

• f(11)=33

• f(11)=50

• f(11)=55

• f(11)=16

Your grade in algebra class is a function of how many proficient scores you earn. This function is represented by g(x), where x represents the number of proficient scores and g(x) represents your grade percentage. Explain what g(16) = 85 means in context.

• A grade of 16 means there were 85 proficient

• If I earn 16 proficient scores then my grade will be an 85%

• g is 5.3

• If I earn 85 proficients I will get a 16%

If g(x) = 6(-8x + 12) + 7, what is the value of g(6)?

Mathematical Equivalence

ON

The function d(x) where x=gallons of gas and d(x)= # of miles traveled.
Interpret d(8)=300 in context.

• A car with 8 gallons of gas can travel 300 miles.

• A car traveling 8 miles has 300 gallons of gas.

• A car is traveling 300 miles.

• The car traveling 8 mph can go 300 miles.

Your grade in algebra class is a function of how many proficient scores you earn. This function is represented by g(x), where x represents the number of proficient scores and g(x) represents your grade percentage. Explain what g(16) = 85 means in context.

• A grade of 16 means there were 85 proficient

• If I earn 16 proficient scores then my grade will be an 85%

• g is 5.3

• If I earn 85 proficients I will get a 16%

If f(x)=2x+4 then f(1) =

• f(1)=2

• f(1)=4

• f(1)=8

• f(1)=6

If f(x)=3x+6 then f(4)=

• f(4)=9

• f(4)=12

• f(4)=18

• f(4)=21