Drawing/Interpreting Graphs (Junior Cert Mathematics): Quizzes

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Drawing Graphs
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What is a function?

A rule assigning each input one output

What is the domain of a function?

The set of possible inputs (xx values)

What is the range of a function?

The set of possible outputs (f(x)f(x))

On a graph of a function, what does the xx-axis represent?

The inputs

What is the first step when graphing a function?

Choose the domain (range of xx-values)

When creating a table of values, what do you do with each xx value?

Substitute it to find corresponding yy

After plotting points, how do you complete the graph?

Connect them with a smooth curve or line

What shape does a linear function produce when graphed?

A straight line

What shape does a quadratic function produce when graphed?

A U-shaped curve

For f(x)=2x−1f(x) = 2x - 1, what is f(1)f(1)?

11

For f(x)=x2−4f(x) = x^2 - 4, what is f(0)f(0)?

−4-4

What should you always label on your graph?

The xx-axis and yy-axis

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