Chapter 4 Functions

x: 0 2 4 6 8
y: -3, -5, -7, -9
Is this a function?

• yes

• no

Define what domain is.

• the set of all y-values

• a relationship between 2 sets of data

• the set of all x-values

• the graph of a straight line

Define what range is.

• the set of all y-values

• the set of all x-values

• the largest number minus the smallest numer

• how far the target is from your shooting position

Find f(x) - g(x)

• 2x² + 8x - 8

• 3x² + 8x - 8

• 2x² + 8x + 8

• 2x² + 4x - 8

Find f(x) - g(x)

• x² - 7x + 2

• -x² + 7x + 2

• -x² - 7x + 2

• -x² - 7x + 4

Answer explanation

To find g(x) - h(x), we need to subtract the functions. If g(x) = 3x and h(x) = 8, then g(x) - h(x) = 3x - 8, which matches the correct answer choice.

Tags

CCSS.HSF.BF.A.1

Answer explanation

To find g(x) - h(x), we need to subtract the functions. If g(x) = 3x and h(x) = 8, then g(x) - h(x) = 3x - 8, which matches the correct answer choice.

Tags

CCSS.HSF.BF.A.1.b

What is the domain for the following set of data?
{(2,3) (4,3) (6,-1) (7, 4)}

• -1, 2, 3, 4, 6, & 7

• 2, 4, 6, 7

• 3, -1, 4

• 1-10

Is this relationship proportional or non-prop?
y = 2x

• Yes, there is no y-int.

• Yes, the slope is 2.

• No, it needs a "+b"

• No, it has a positive slope

Is this relation a function or not?
{(1,3) (-1,4) (2,1) (1,-3)}

• Yes, all the y-values are different

• No, there is -1 and 1 as x-values

• No, the domain repeats

• Yes, the domain doesn't repeat