All ISEE Middle Level Math Resources
Example Questions
Example Question #11 : Coordinate Geometry
Find the slope of the line that passes through coordinates and .
The formula for slope is:
In this particular question our values are given as follows.
Substituting the above values into the formula for slope we get,
.
Example Question #4 : How To Find A Line On A Coordinate Plane
Billy set up a ramp for his toy cars. He did this by taking a wooden plank and putting one end on top of a brick that was 3 inches high. He then put the other end on top of a box that was 9 inches high. The bricks were 18 inches apart. What is the slope of the plank?
The value of the slope (m) is rise over run, and can be calculated with the formula below:
The coordinates of the first end of the plank would be (0,3), given that this is the starting point of the plank (so x would be 0), and y would be 3 since the brick is 3 inches tall.
The coordinates of the second end of the plank would be (18,9) since the plank is 18 inches long (so x would be 18) and y would be 9 since the box was 9 inches tall at the other end.
From this information we know that we can assign the following coordinates for the equation:
and
Below is the solution we would get from plugging this information into the equation for slope:
This reduces to
Example Question #291 : Geometry
What is the slope of the line depicted by the graph?
Looking at the graph, it is seen that the line passes through the points (-8,-5) and (8,5).
The slope of a line through the points and can be found by setting
:
in the slope formula:
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