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EXPRESSIONS, EQUATIONS, AND FUNCTIONS
LINEAR EQUATIONS/GRAPHING
WRITING EQUATIONS
SYSTEMS OF EQUATIONS
100

Graph the function:

y = 4(5)x

Look at graph
100
4(6n+7) when n=6
What is 172.
100
Identify the slope and y-intercept: 6x+3y=18
What is m=-2;b=6
100
Equation of the line that passes through the point (-2,9) and has slope -2.
What is y=2x+5
100

Solve the linear system: y= -5x+4, 6x-y=7

What is x=1, y=-1 or (1,-1)

200

Write the equation for the following situation:

You have $300 dollars that you are investing. You earn 4% annual interest, compounded annually. 

y = 300(1.04)x

200

Write the equation:

3 times the difference of a number m and 15 is equal to 30 

What is 3(m-15)=30.

200
X-intercept and Y-intercept: -2x+5y=-20
What is x-intercept=10; y-intercept=-4
200

Equation of the line that passes through the two given points: (3,9) (1,1).

y=4x-3.

200

Solve the system:

x - y = 11

2x + y = 19


x = 10

y = -1

300

Solve the following inequality

-4(x+4) < 40

x > - 14  

300

Is x=8 a solution for 2x+10<4x-7

What is no 26<25 does not work!

300
Solve for x: 16x-4=4(2x-3)
What is x=-1.
300
Equation of the line that passes through the given point and is perpendicular to the given line: (3,-3), y=x+5
What is y=-x.
300

Is the ordered pair a solution to linear system? How do you know? (8,5), 5x-4y=20, 3y=2x+1

No!

400

Solve the compound inequality:

-10 < (8x + 4)/2 < 10

-3 < x < 2

400

You buy apples at $2 per pound and oranges at $3.50 per pound. What is an expression for the total cost of fruit purchased? Also, what is the total cost of 7 apples and 4 oranges?

What is 2a+3.50o =c ; c=28

400

Identify the slope and y intercept: 

1/2x - 1/2y = 4

x = 8, y = -8

400

You have $6050 dollars to invest. You invest the money in 2010. If you earn 8% simple interest annually, how much is in the account today? 

$13,794

400

Solve the linear system: 2x+9y=16, 5x=1-3y

(-1, 2)

500

You have $5000 dollars to invest. You can invest in an account that earns 5% interest, compounded annually, OR in an account that earns 6% simple interest. Which is better after 10 years? How do you know?

Compound: $8,954

500
A rectangular banner is 16 feet long and has an area of 80 square feet. What is the perimeter of the banner?
What is 42 feet.
500

Graph the line:

-3y + 4x + 2 = 10x + 23

y = -2x -7 (look on graph)

500
The equation of a line that has a y-intercept of 5, and is PERPENDICULAR to the line that goes through the points (3, 2) (-1, -1). 

y = -4/3x + 5

500

Write and Solve the System of Equations:

You and a friend go to Tacos Galore for lunch. You order three tacos and three burritos and your total bill is $11.25. Your friend's bill is $10.00 for four tacos and two burritos. How much do tacos cost? How much do burritos cost?

tacos = $1.25

burritos = $2.50