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- Common Core MathK - 8High School

# Grade 8: Functions

581 questions31 skills

# Grade 8: Functions

581 questions31 skills

## 8.F.A.1

337 questions19 skills

Understand that a function is a rule that assigns to each input exactly one output. The graph of a function is the set of ordered pairs consisting of an input and the corresponding output.

Evaluate function expressions

Solutions to 2-variable equations

Domain and range from graph

Intercepts from a graph

Graph from linear standard form

Intercepts from a table

Evaluate functions

Slope-intercept from two points

Evaluate functions from their graph

Graph from slope-intercept form

Linear equations word problems

Function rules from equations

Function domain word problems

Slope-intercept equation from graph

Function inputs & outputs: equation

Linear equations in any form

Complete solutions to 2-variable equations

Recognize functions from tables

Recognize functions from graphs

## 8.F.A.2

47 questions2 skills

Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions).

## 8.F.A.3

130 questions7 skills

Interpret the equation

*y = mx + b*as defining a linear function, whose graph is a straight line; give examples of functions that are not linear.## 8.F.B.4

128 questions8 skills

Construct a function to model a linear relationship between two quantities. Determine the rate of change and initial value of the function from a description of a relationship or from two (

*x, y*) values, including reading these from a table or from a graph. Interpret the rate of change and initial value of a linear function in terms of the situation it models, and in terms of its graph or a table of values.## 8.F.B.5

34 questions2 skills

Describe qualitatively the functional relationship between two quantities by analyzing a graph (e.g., where the function is increasing or decreasing, linear or nonlinear). Sketch a graph that exhibits the qualitative features of a function that has been described verbally.