What's the Slope?
Distance Time Speed
What do the lines mean?
More on Slope
Definitions
100
What can you find with this equation?
slope
100
What is the equation for solving Distance?
d = s x t
100
What are the coordinates of these points?
(50, 40) and (100, 80)
100
What color line shows the fastest speed?
blue
100
the distance traveled by the time interval during which the motion occurred
position
200
What are the x and y coordinates on this graph? 
(10, 60) (30, 100)
200
An airplane flies 150 km in .5 hours. What is its average speed?
s = d/t
300 km/hr
because
s = d/t
150 / .5 = 300
200
What is the object doing at A, B, C and E on the graph?
moving at a constant speed
200
The slope of this line is 1.2 1.2 what??
1.2 m/s See:
200
the speed of an object in a particular direction
velocity
300
When you subtract the y coordinates, what do you get?
40
300
Grace drives her car with a constant speed of 56 km/h. How far can she travel in 1 hour?
56 km
300
What is the moving object doing at E?
It's returning to the point of origin (point of reference)
300
Something like this:
Subtract 60-0 to get the change in y.
Subtract 50-0 to get the change in x.
Divide 60/50 to get the slope, 1.2
300
an object's change in position relative to a reference point
motion
400
When you subtract the x coordinates, what do you get?
20
400
Herbie jumped on his trampoline. He flew up with a speed of 20 ft/sec. How long did it take him to go up 12 feet?
0.6 seconds
because
t = d/s
12 / 20 = .6400
Which line is not moving? It is stationary.
D
400
Write down the equation for slope from memory. See if it matches the answer.
400
a location to which another location is compared
reference point
500
What is the slope of this line?
2
Here's how:
The coordinates are: (10, 60) (30, 100)
The change in y is 40 and the change in x is 20.
So: 40/20 = 4/2 or 2
500
!!DOUBLE JEOPARDY!! Get it right and get two clicks.
Kyle threw a baseball 74 mi/hr. It traveled .0114 mi from the pitcher's mound to home plate. How long did it take to get there?
1.54 seconds
because
t = d/s
.0114 / 74 = 1.54
500
What does a vertical line mean on a Distance - Time graph?
It doesn't mean anything. It is undefined.
500
!!! TRIPLE JEOPARDY!!! Get it right and get three clicks.
What is the slope and speed of this line?
500
What is the measure of the steepness of a line?
slope