Proportional Relationships
If a ladybug crawls 4cm in 2 seconds, how long does it take to crawl 12cm?
What is 6 seconds
What would you look for to identify a proportional relationship in a graph or a table?
SOS, Straight line, it starts at the origin (0,0), it has no y-intercept, same rate of change.
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
Combine like terms: 25 - 2x + 10
What is 2x-35
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
Combine like terms
2x+4-x+2
What is x+6
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 Year 1 I have $600 in a savings account
In Year 3 I have $750 in a savings account
In Year 5 I have $900 in a savings account
In Year 7 I have $1050 in a savings account
How much do I add to the account each year?
What is $75
If y=2x+5
What is the slope?
What is 2
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)
15 is not equal to 13
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 Elena
Diego earns $12 every time he cuts the lawn. If he cuts the lawn 35 times, how much money will Diego have?
What is $420
If y=-3x+5
What is the slope?
What is -3
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
Mr. Dyer spends $3000 a month. He has $10000 in savings. What equation represents this situations?
What is y = -3000x+10,000
Plumber #1 charges $50 per hour.
Plumber #2 charges $40 for 45 minutes of work.
Who charges more per hour?
What is Plumber #2
You want to ship math textbooks from Singapore. They cost $80 each, plus $30 shipping Write an equation to model the cost of the textbooks.
What is y = 80x+30
A road trip took 7 hours, and was 455 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
What is the y-intercept?
y=2x+3
What is 3