Algebra Building Functions

Is this a function?

• Yes, one output for each input

• No, multiple y-values for an x-value

• It depends

• Not enough information

Is this a function?

• Yes, one output for each input

• No, multiple y-values for an x-value

• It depends

• Not enough information

There are m strawberries in a box. How many strawberries will there be in total if you add 3?

• m + 3

• 3m

• m + m + m

• m x 3

There are g trees in a forest. If 100 trees are cut down for Christmas, how many trees are left?

• 100g

• g - 100

• (-g) + 100

• g/100

This piece of string is 30 cm long. If Sarah cuts off p cm from one end, what length is left?

• 30 - p

• 30 + p

• 30/p

• 30 - 2p

Determine the domain and range of the function

• Domain: All real numbers, Range: All real numbers

• Domain: x ≥ -4, Range: All real numbers

• Domain: All real numbers, Range: y ≥ -4

• Domain: -1 ≤ x ≤ 5, Range: y ≥ -4

• A

• B

• C

• D

• A

• B

• C

• D

Factor:

4x² + 26x + 30

• (2x + 1)(x + 15)

• (x + 4)(x + 30)

• (2x + 3)(2x + 10)

• 2(2x + 3)(x + 5)

Solve 𝑥² = 5𝑥 − 10

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