LAKE BRANTLEY
HIGH SCHOOL
ALGEBRA
MA.912.A.2.3 Functions
What You Need To Know...
Functions, function notation, determine whether a given relation is a function, and link equations to functions.
-
The benchmark will be assessed using MC (Multiple Choice) and FR (Fill in Response) items.
-
Items may use a variety of forms, including graphs, tables, sets of points, or equations.
-
Items may ask to determine the equation of a function.
-
Items may use function notation.
Example One
Andrew plotted a set of points on the coordinate grid shown below. All of the points have integer coefficients.
Which of the following points could be removed so that Andrew's graph represents a function?
-
(-4, -3)
-
(-2, 1)
-
(0, 0)
-
(2, -2)
Example Two
The function shown below is used to convert a temperature, x, in degrees Fahrenheit (°F), to a temperature, f(x), in degrees
Celsius (°C).
Micah wanted to convert today's high temperature of 77°F to °C. What is today's high temperature in °C?
Example Three
For one child, a childcare facility charges $300 per month for preschool and $3.50 per hour for each hour of childcare after preschool. The function below can be used to determine f(h), the monthly fee for childcare and preschool, where h represents the number of hours spent in childcare after preschool.
f(h) = 300 + 3.5h
If the one-month charges for one child totaled $637.75, what was the total number of hours the child spent in childcare after preschool?
Functions
Polynomials
Rationals Discrete
