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Grade 8 Algebra: Identifying Functions from Graphs

Name: ______________________Date: ____________Score: ____ / 8

Level 1

Lines and familiar curves

Directions: Use the vertical line test to decide whether each graph represents a function of ${x}$ .

$\text{Identifying}$ $\text{Functions}$ $\text{from}$ $\text{Graphs:}$ $\text{Free}$ $\text{8th}$ $\text{Grade}$ $\text{Math}$ $\text{PDF}$

$\text{A}$ $\text{function}$ $\text{assigns}$ $\text{exactly}$ $\text{one}$ $\text{output}$ $\text{to}$ $\text{each}$ $\text{input.}$ $\text{Ordered}$ $\text{pairs,}$ $\text{tables,}$ $\text{equations}$ $\text{and}$ $\text{graphs}$ $\text{show}$ $\text{these}$ $\text{relationships,}$ $\text{while}$ $\text{the}$ $\text{vertical}$ $\text{line}$ $\text{test}$ $\text{helps}$ $\text{identify}$ $\text{functions}$ $\text{and}$ $\text{graph}$ $\text{features}$ $\text{reveal}$ $\text{how}$ $\text{quantities}$ $\text{change.}$

$\text{Identifying}$ $\text{Functions}$ $\text{from}$ $\text{Graphs.}$ $\text{Level}$ $\text{1:}$ $\text{Lines}$ $\text{and}$ $\text{familiar}$ $\text{curves.}$