Linear Functions Review

A function means that the input ___________ the output.

• Does not determine

• Determines

• Adds to

.

• Function

• Not a Function

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

The 2 tables show a relationship between x and y values. What do the 2 linear functions have in common?

• y-intercept

• x-intercept

• 2 common points

• identical slopes

Which function has a greater y-intercept, and why?

• Function 2 has a greater y-intercept because 5 > 3.

• Function 1 has a greater y-intercept because 5 > 3.

• Function 2 has a greater y-intercept because -1/2 > -3.

• Function 1 has a greater y-intercept because -1/2 > -3

Which statement is true about the rate of change of the two functions?

• Both functions have negative rates of change.

• Both functions have positive rates of change.

• Function 1 has a negative rate of change, while that of Function 2 is positive.

• Function 1 has a positive rate of change, while that of Function 2 is negative.

A function is a rule that assigns to each input exactly one output. In a graph, the input is the x-value, and the output is the y-value.

Which graph(s) do not represent a function?

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• 
• 
• 
• 

Consider the relation shown in the figure.
Which ordered pairs show that the relation is not a function?

• (0,-2) and (0,1)

• (0,1) and (2,1)

• (1, 2) and (3,4)

• None, because this mapping is a function

Which table(s) do not represent a function?

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• 
• 
• 
• 

Which statement describes the definition of a function?

• For every input, there is exactly one output.

• For every input, there are no more than two outputs.

• For every output, there is exactly one input.

• For every output, there are no more than two inputs.