1. find the correct table of values for the following function: y = x – 3 (1 point)

x
y
10
8
8
6
6
4

x
y
10
13
8
11
6
9

x
y
10
7
8
5
6
3

x
y
10
3
8
3
6
3

2. evaluate the function for x = 2: f(x) = 7x – 5 (1 point)

9

19

–9

–19

3. candy is on sale for $0.75 each. you have a coupon for $0.25 off your total purchase. write a function rule for the cost of n pieces of candy. (1 point)

c(n) = 0.25n – 0.75

c(n) = 0.75n – 0.25

c(n) = 1.0n

c(n) = 0.75n

4. the ordered pairs (0, 0), (2, 4), (4, 8), and (6, 12) represent a function. what is the rule for this function? (1 point)

y = x +2

y = 3x

y = x + 4

y = 2x

QUESTION 1

When

x=10, y=10-3=7

Hence the correct answer is C.

QUESTION 2

We have

To evaluate this function at

We replace x with 2 in the given function to obtain,

We now simplify to obtain,

The correct answer is A.

QUESTION 3

If each candy is $0.75, then n pieces will be

$

If you have $0.25 off, then cost of n pieces of candy will be

$

The correct answer is B.

QUESTION 4

We have been given the ordered pairs,

By inspection you can observe that,

Hence

Or we can alternatively use,

and substitute any two points to find the constants.

When we substitute

We get

which gives

Our equation now becomes,

We now substitute our second point, say

Therefore,

The equation is

Therefore the correct answer is D.

10

Step-by-step explanation: