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(2.1) Functions and Relations

Here is an example of a function.

a) When $4$ is the input, what is the output?

b) When $-2.8$ is the input, what is the output?
*Give your answer as a decimal.

c) When $-\frac{1}{3}$ is the input, what is the output?
*Give your answer as a fraction.

d) When $x$ is the input, what is the output?
The function represented as a set of ordered pairs

a) Fill in the blank: $\left(0,\square\right)$

b) Fill in the blank: $\left(-1,\square\right)$

c) Fill in the blank: $\left(x,\square\right)$
The function represented as a mapping

Is this an example of a "one-to-one", "many-to-one" or "one-to-many" mapping?
The function represented as a graph

If all the numbers from $-\infty$ to $\infty$ were put into the function,
the graph would be a line with the equation $y=$

Another Function

Here is a different function.

a) When $4$ is the input, what is the output?

b) Fill in the blank: $\left(x,\square\right)$

c) Is this an example of a "one-to-one", "many-to-one" or "one-to-many" mapping?

d) If all the numbers from $-\infty$ to $\infty$ were put into the function,
the graph would be a parabola with the equation $y=$