ISEE Middle Level Math : Geometry

Study concepts, example questions & explanations for ISEE Middle Level Math

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Example Questions

Example Question #434 : Problem Solving

Which of the following points is on the -axis?

Possible Answers:

Correct answer:

Explanation:


A point is located on the -axis if and only if it has a -coordinate equal to zero.  So the answer is .

Example Question #282 : Geometry

A line segment on the coordinate plane has its endpoints at the points with coordinates  and . Give the midpoint of the segment.

Possible Answers:

Correct answer:

Explanation:

The -coordinate of the midpoint can be found by dividing the sum of the -coordinates of the endpoints by 2:

The -coordinate of the midpoints is found similarly:

Example Question #1 : Coordinate Geometry

A line segment on the coordinate plane has its endpoints at the points with coordinates  and . Give the coordinates of the midpoint of the segment.

Possible Answers:

Correct answer:

Explanation:

The -coordinate of the midpoint can be found by dividing the sum of the -coordinates of the endpoints by 2:

The -coordinate of the midpoint is found similarly:

.

The correct response is .

Example Question #284 : Geometry

A line segment on the coordinate plane has its endpoints at the points with coordinates  and .  Give the coordinates of the midpoint of the segment.

Possible Answers:

Correct answer:

Explanation:

The -coordinate of the midpoint is half the sum of the -coordinates of the endpoints:

The -coordinate of the midpoint is found similarly:

The correct response is .

 

Example Question #281 : Geometry

Angela plotted points A through E on the coordinate plane shown below.

 

Points_grid

Which point is located at the ordered pair 

Possible Answers:

Point D

Point C

Point A

Point B

Point E

Correct answer:

Point B

Explanation:

Start at point (0, 0) in the bottom, left corner of the the coordinate plane. From there, count right 2 spaces. This is the first number in the given ordered pair. From that point, count up 8 spaces. This is the second number in the given ordered pair.

By moving right 2 and up 8, you should have found Point B.

Example Question #2 : Coordinate Geometry

Give the slope of the line that passes through  and .

Possible Answers:

Correct answer:

Explanation:

Use the slope formula, substituting :

Example Question #282 : Geometry

What is the slope of the line that passes through and ?

Possible Answers:

Correct answer:

Explanation:

We can use the slope formula:

 

Example Question #6 : Coordinate Geometry

What is the slope of the line that passes through  and ?

Possible Answers:

Correct answer:

Explanation:

We can use the slope formula:

 

Example Question #1 : How To Find A Line On A Coordinate Plane

Find the slope of the line that passes through coordinates  and .

Possible Answers:

 

Correct answer:

 

Explanation:

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 #436 : Problem Solving

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?

Possible Answers:

Correct answer:

Explanation:

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 

 

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