Systems, linear and Exponential Review

Given the system of equations:

2x – 9y = 15

6x – 18y = 18

The solution set for this system is x = ________ and y = ________.

What is the value of y in the solution to this system of equations? 6y + x = -59 x = -2y + 9

Two customers went to a post office to buy postcards and large envelopes.

Each postcard costs the same amount, and each large envelope costs the same amount. - The first customer paid $12 for 14 postcards and 5 large envelopes. - The second customer paid $24.80 for 10 postcards and 15 large envelopes. What are the solutions for this system? A large envelope costs ________ and a postcard costs ________.

Large Envelope - (a)  

Postcard - (b)  

• Large Envelope

• Postcard

• $1.42
• $0.35
• $1.35
• $0.42

• Student 1, because the y-intercept is 4.

• Student 1, because the graph shows exponential growth.

• Student 2, because the y-intercept is 4.

• Student 2, because the graph shows exponential decay.

• A

• B

• C

• D

• F

• G

• H

• J

• F: x = 3

• G: x = 5

The graph of part of a linear function ( k ) is shown on the grid.

Write the inequalities that best represents the

domain and range of the part shown.

The domain is _____ and the range is _____.

• Range is

• Domain is NOT

• Range is NOT

• Domain is

• x - 4

• x + 2

• x + 3

• x - 6

• x - 12