Vocabulary
the steepness of a line; often referred to as rise over run
What is the slope?
The slope of a line that goes through the points (3,2) and (6,8).
What is 2?
In the equation y=4x+1, if x is 0, what is y?
What is 1?
Let's go mini-golfing! It costs $ 12 (y) to play 3 mini golf rounds (x). Write an equation that represents this relationship. (hint: Find the unit rate/slope and then use the equation y=mx)
What is y=4x?
The formula for the equation of a line in slope intercept form (hint: use m and b)
What is y=mx+b?
Two lines that will never intersect. They will always have the same slope.
What are parallel lines?
The slope of a line that goes through the points (-2,4) and (4,7).
What is 1/2?
In the equation y=-3x+2, what is the y-intercept?
What is 2?
A cell phone plan costs $10 per month plus $0.10 for each minute used. Last month, you spent $18.50 using this plan. This can be modeled by the equation below: 18.5= 0.1x + 10. How many minutes did you use last month? (Solve for x)
What is 85 minutes?
Another name for the constant of proportionality (two options acceptable).
What are slope or rate of change?
On the coordinate plane, another name for (0,0).
What is the origin?
If the rise is 6 and run is 2, what is the slope?
What is 3?
In the equation 2x+y=6, what is the slope AND y intercept?
What are -2 and 6?
A boa constrictor is 18 inches long at birth and grows 8 inches per year. Write an equation that represents the length y (in feet) of a boa constrictor that is x years old.
What is y=8x + 18?
The equation for a proportional relationship.
What is y=mx?
How much it is for one of something.
What is unit rate?
The slope of a line with a rate of change of 4
What is 4?
What is the slope AND y-intercept of this equation?
y = -x + 3
What are -1 and 3?
You organize a garage sale. You have $30 at the beginning of the sale. You earn an average of $20 per hour. Write an equation that represents the amount of money y you have after x hours.
What is y = 20x + 30?
Name 3 methods for solving a system of equations
What are graphing, substitution, and elimination?
When a graph starts at the origin and increases at a constant rate, the relationship is said to be what?
What is proportional?
The slope of this line: y=-2x+8
What is -2?
Write an equation in slope-intercept form for the line that passes through (0,3) and has a slope of -2.
What is y = -2x + 3?
One of your friends gives you $10 for a charity walkathon. Another friend gives you $2 per mile. In the end, you raised a total of $20. How many miles did you walk?
What is 5 miles?
If it costs $68 for 4 pairs of earrings, what is the rate of change?
What is $17 per pair?