Proportional Relationships
If a ladybug crawls 4cm in 2 seconds, how long does it take to crawl 12cm?
What is 6 seconds
What does it mean if something is linear?
What is, it increases or decreases at a steady rate
What is the slope of the equation,
y = 25x - 100
What is 25
what does m and b stand for in the equation
y = mx + b
What is slope and y intercept
Simplify the following expression
25 - 2x + 10
What is 35 - 2x
An ant crawls 6cm in 2 seconds, how many cm does it crawl in 16 seconds?
What is 48cm
The equation y = 2x tells how far a bug travels in cm, per second.
How far did it crawl in 15 seconds?
What is 30 cm
I have $1000 in my bank account. $50 is added each month.
What is the slope of this situation?
What is $50
Write an equation for the scenario,
I start with no money in a savings account and save $10 per week
What is y = 10x
Simplify the expression
5(3 + 2) - 2 x 2
What is 21
Girl scouts are selling cookies. Each box costs the same amount. If 15 boxes is $52.50 and 22 boxes is $77, how much does each box cost?
What is $3.50
In 2010 I have $600 in a savings account
In 2012 I have $750 in a savings account
In 2014 I have $900 in a savings account
In 2016 I have $1050 in a savings account
How much do I add to the account each year?
What is $75
A line goes through the origin (0, 0) and through the point (2, 5)
What is the slope of the line?
What is 2.5
Write an equation for the scenario,
I owe my brother $100 and pay him back $5 per week
What is y = -5x + 100
Is x=5 a solution to the equation
15 = 3x - 2
What is no
15 = 3(5) - 2
15 = 15 - 2 (this is not true)
The equation for the amount of money Elena makes babysitting is Y = 8.50x where y is the total amount earned, and x is the number of hours
Alli makes $7 per hour babysitting.
Who makes more money babysitting?
Who is Alli
Diego earns $12 everytime he cuts the lawn.
If he cuts the lawn 35 times, how much money will Diego have?
What is $420
A line goes through the points (10, 0) and (11, -5)
What is the slope?
What is -5
Write an equation for the scenario,
There was 6 inches of snow on the ground and 2 inches continues to fall each hour.
What is y = 2x+6
Find the y-intercept of a line that goes through (-2,5) and (1,4)
4 1/3
Plumber #1 charges $50 per hour.
Plumber #2 charges $40 for 45 minutes of work.
Who charges more per hour?
What is Plumber #2
During the last winter storm, we averaged 1/2 inch of snow for 4 hours, and then 1 inch of snow for 5.5 hours.
How many inches of snow did we get?
What is 7.5 inches of snow
A road trip took 7.5 hours, and was 487.5 miles long.
What was the average speed of the trip?
What is 65mph
Write an equation for the scenario,
I have 150 baseball cards and sell 13 each week.
What is y = -13x + 150
Mr. Dyer spends $3000 a month. He has $10000 in savings. What equation represents this situations?
What is y = -3000x+10,000