You plug in _____ to get the other variable's (x or y) intercept
0
200
What is the slope of (-21,7) and (9,-3)?
Negative one third
200
What is the constant of variation in the equation y=379x?
379
200
f(x)=-4x when x=2.5: evaluate the function for the given value
f(x)=-10
300
A linear equation is ___
What is an equation that when it is graphed gives you a straight line
300
Where do you always begin in graphing?
The origin.
300
Rate of change is
A comparison of a change in one quantity with a change in another quantity
300
2x-3y=0 is a direct variation, true or false?
True
300
What is the slope of the line that passes through the points; (2,1) and (8,4)?
1/2
400
F(x) = mx + b is the same as ___
What is y = mx + b
400
How can you tell if a lines are parallel or not?
If they have the same slope
400
What is the slope of (-4, 8) and (8,8)?
Zero
400
What do you know will be always true in graphing a direct variation?
That the y intercept will be located at the origin.
400
The table shows the distance a person walks for exercise. Find the rate of change in distance with respect to time.
Time: 30 60 90
Distance: 1.5 3 4.5
20
500
The independent variable is usually on the ___ axis and the dependent variable is usually on the ___ axis
What is x axis is the independent and y axis is the dependent variable
500
The distance (d) in miles that a runner travels is given by the function d=6t where= the time (in hours) spent running. Identify the domain and range.
Domain (t): 0 0.5 1 1.5
Range (d): 0 3 6 9
500
The table shows the cost of renting skates for a given amount of time. Find the rate of change in cost with respect to time.
Time: 3 6 9
Cost: 9 18 27
3
500
True or False: The following table represents a direct variation?
x: 1 2 3 4
y: 4 7 10 13
False
500
To start a dog washing business, you invest 300$ in supplies. You charge 10$ per hour. Your profit P (in dollars) for working t hours is given by P=10t-300. What will be your profit after 46 hours?