Functions

Presentation

•

Mathematics

•

8th - 11th Grade

•

Medium

•

CCSS

HSF.IF.A.2, 8.F.A.1, HSF.IF.A.1

Standards-aligned

Robert Signs

Used 838+ times

FREE Resource

3 Slides • 14 Questions

Functions Review

Open Ended

Answer this question while we wait for everyone to join. How has this week gone for you and why?

Type response here

Remember, to evaluate functions, substitute the given value in for x.

For example, if f(x) = 4x - 8, then f(3) = 4(3) - 8, which means f(3) = 4

Multiple Choice

g(x) = 11 - x
Find g(x) = -7

-77

Multiple Choice

f(x)=x²-5x
f(4)=

-4

126

Multiple Choice

f(x) = 3x² - 11
Find f(-5)

f(-5) = 64

f(-5) = -86

f(-5) = 214

f(-5) = -7

Multiple Choice

Evaluate f(t)=-2t²+ 1 for f(-3)

-17

-11

Remember, in order to be a function, x cannot repeat

In tables or ordered pairs, just check the domain (the x values)
With mapping, each input can go to only one output
With graphs, use the vertical line test to see if any vertical lines touch the function more than once (which would mean x repeated)

Multiple Choice

Is this table a function or not a function?

Function

Not a Function

Multiple Choice

Which set of values is a function?

(9,5) (10,5) (9,-5) (10,-5)

(3,4) (4,-3) (7,4) (3, 8)

(6,-5) (7, -3) (8, -1) (9, 1)

(2, -2) (5, 9) (5, -7) (1, 4)

Multiple Choice

Which ordered pair could you add to the following list of points to create a function? (3, 5) (4, 9) (2, 5)

(3, 7)

(4, 1)

(1, 9)

(2, 6)

Multiple Choice

Is this mapping a function or not a function?

Function

Not a Function

Multiple Choice

Is this graph a function or not a function?

Function

Not a Function

Multiple Choice

Function

Not a Function

Multiple Choice

Which graph does NOT pass the vertical line test?

Graph 1

Graph 2

Graph 3

Graph 4

Multiple Choice

Is this mapping a function or not a function?

Function

Not a Function

Poll

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Like this, where we go through questions together one at a time.

Like we've done before, where I can go through questions on my own.

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Functions Review

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