The Coordinate Plane
Rates of Change
Slope
Direct Variation
100
Which quadrant is the ordered pair (3, 2) in?
What is 1
100
What does a horizontal line represent on a graph?
What is the constant
100
The graph of a constant rate of change is a ________
What is a line
100
What is the direct variation equation?
What is y=kx
200
Which quadrant is the ordered pair (-4, -2) in?
What is 3
200
If a line rises from left to right, it's slope is ________.
What is positive
200
Slope is a ratio of _______ over _______
What is Rise, Run
200
An Eastern Box Turtle travels 18' in 1 minute, 36' in 2 minutes, 54' in 3 minutes, and 72' in 4 minutes.  Is this D.V.? If so identify the constant of variation, k.
What is yes, k=18
300
Which quadrant is the ordered pair (2, -5) in?
What is 4
300
If a line decreases from left to write, the slope is ___________.
What is negative
300
What is the slope of the line containing the two points:

(-2, 13) and (1, 4)?

-3
300
Is this equation D.V?  If so, identify the constant of variation, k.

2y=x

What is yes, k=1/2
400

What is the intersection of the x and y axes called?

What is the origin
400
If a slope is a horizontal line, the slope is __________
What is zero
400
What is the slope of the line containing the points: (-2, -6) and (2, 2)?
What is 2
400
Solve for y.  Identify whether or not the equation is D.V.

y + 1 = 2x

What is y=2x - 1

not D.V.

500
What point is 5 units left and 2 units down from point (1,2)?
What is (-4, 0)
500
What type of slope is a vertical line on your graph?
What is undefined
500
What is the slope of the line containing the points:

(2, -3) and (3, -5)?

What is -2
500
A truck travels at a speed of 55 miles per hour.

Write a direct variation equation and identify the constant of variation, k.

What is y=55x

k=55

M
e
n
u