Last updated on Oct 23, 2026

Exponential: y=a^x (Junior Cert Mathematics): Quizzes

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Exponential: y=a^x

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In an exponential function, where does the variable appear?

As the exponent or power

In the function $f(x) = 2^x$ , what is $2$ called?

The base

In the function $f(x) = 2^x$ , what is $x$ called?

The exponent or power

What is the value of $f(x) = 2^x$ when $x = 0$ ?

$1$

What is any number to the power of $0$ equal to?

$1$

What is the value of $f(x) = 2^x$ when $x = 3$ ?

$8$

What happens to exponential functions as $x$ increases?

They grow very fast

Where is the graph of $f(x) = 2^x$ always positioned?

Above the $x$ -axis

At which point does the graph of $f(x) = 2^x$ cross the $y$ -axis?

$(0,1)$

What is the value of $f(x) = 2^x$ when $x = -1$ ?

$0.5$

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