Vocabulary
y = mx + b
What is the slope intercept form?
m = 1
b = -5
What is y = x - 5?
What is 3?
Rate of changes for the following points:
(1,5) and (0,-4)
What is 9?
A printer cost $150. To print a page it costs $1. Show the function to show this cost over time.
What is Cost = page + 150?
(y = x + 150)
Change in y
Change in x
y-intercept = 7
slope = -4
What is y = -4x + 7?
The y-intercept for the equation y = -6 +2
What is 2?
Initial cost of a plastic car factory where the cost is represented as the function: y = 6x + 450 where y is the cost and x is the number of plastic cars made.
What is $450?
In a race, the checks in for Mary are shown in the table below. What is the rate that Mary went? (speed)
Minutes 0 10 20 30
Mile Marker 0 .5 1 1.5
What is 1/20 miles per minute?
(or 20 min mile)
b in the formula
y = mx + b
What is the y-intercept?
line with points (0,2) and (4,6)
What is y = x+2?
slope of the line through (-3,11) and (4,-3)
What is -2?
The function (a), (b), or (c) that has the greater rate of change?
(a) (1,7), (-2,-2), (2,10) (-1, 1)
(b) y = -4x - 1
(c) y = 3x + 4
What is (b) y = -4x -1?
graph the following function
y = -2x + 6
See Graph WP 300
m in the formula
y = mx + b
What is the slope?
a line parallel to y = 4x + 7 and includes the point (0,2)
What is y = 4x +2?
the slope for the following function line:
x 5 6 10
y 11 14 26
What is 3?
The rate of change for the function whose x increases by 8 while the y decreases by 4
What is -1/2?
What is the slope for the graph
See Graph WP 400
The steepness of a line in the coordinate plane
What is the slope?
a line perpendicular to a line with a slope of -1/2 and goes through the point (0,5)
What is y = 2x + 5?
The steeper line between: y = 2x +4 and y = -3 x -4
What is y = -3x -4?
(Steeper = larger absolute value of the slope (|m|)
Which has the greater rate of change?
y = -5x + 4 or
x 1 3 5
y 1 7 11
What is y = -5x + 4?
Graph the data below. What is the slope and the y intercept.
X 5 10 15
Y 1 -2 -5
See WP 500
slope = -3/5
y intercept = 4