Line Equations
Graphs
Rates
100
True or False. The coordinate pair (2,3) is a point on the line 2x+4y=20.
False. 2(2)+4(3)=20
4+12=16, not 20.
100
What is the missing number? (0, ____). Which intercept is it?
20. The y - intercept.
100
It costs $0.50 to download an individual song and $4 to download an album. Jada has $15 to spend downloading music.
If she downloads 6 songs, how many albums can she buy?
3 Albums
200
Write the equation for the red line.
y=4
200
What is the coordinate pair of the x intercept on this graph?
(5,0)
200
A sandwich store charges a $10 delivery fee and $4.50 for each sandwich. What is the total cost (sandwiches and delivery charge) if an office orders 7 sandwiches?
$41.50
300
Write an equation for the blue line.
x=-4
300
What is the slope of this line? 
-4
300
It costs $0.50 to download an individual song and $4 to download an album. Jada has $15 to spend downloading music.
What equation represents how to solve for x songs and y albums?
0.5x+5y=15
400
Which sets of points are on the line 2x+4y=20?
(0,5) (0,10) (1,2) (1,4) (5,0) (10,0)
(0,5) and (10,0)
400
Write an equation for this data, then answer how much money Priya will have left over if she buys 3 comics.
(the equation is y=-4x+20) If x=3, then y=-4(3)+20. So y=8. Priya will have $8
400
Sally's Sandwiches uses the equation -4.5x + y = 10 to determine the customer's cost.
Bob's Deli uses the equation y = 4.5x + 5 to determine its customers' cost.
What conclusions can you make about the two sandwich shops in relation to each other?
(You must have at least 2 answers to get this question correct.)
The rate of the two shops is the same.
Bob's Deli has a lower delivery fee ($5) than Sally's Sandwiches ($10).
On a graph, the two lines will be parallel.
500
Write the equation for the green line. 
y=x-1
500
For two weeks, the highest temperature each day was recorded in four different cities. Lines ℓ, m, n, and p are graphs of the temperature over time in Lubbock, Memphis, New Orleans, and Phoenix. What statement can you make about Memphis?
The high temperature in Memphis decreased steadily.
500
Which marathon runner has the fastest speed? Here's how they recorded their info:
Runner 1
Runner 2's distance, d in miles with time, t: t=8.5d
Runner 3: Distance Time (minutes)2 18
4 36
6 54
Runner 2
600
Write an equation for the black line. 
y=-2x+4
600
Jada earns twice as much money per hour as Diego. Diego earns twice as much money per hour as Lin.
Draw a graph to represent this relationship. Remember to label your axes.
BONUS: Draw two different graphs to represent this data!
600
A truck is shipping jugs of drinking water and cases of paper towels. A jug of drinking water weighs 40 pounds and a case of paper towels weighs 16 pounds. The truck can carry 2,000 pounds of cargo altogether. Write an equation that can solve for any amount of these products.
BONUS: How many jugs of water can the truck hold if there are 50 cases of paper towels? AND How many cases of paper towels can the truck hold if there are 50 jugs of water?
jugs of water = w & cases of towels = t
40w + 16t = 2000
30 cases of water and 50 cases of towels
50 cases of water and 0 cases of towels