Algebra 1 : Equations of Lines

Study concepts, example questions & explanations for Algebra 1

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Example Questions

Example Question #886 : Functions And Lines

Find the midpoint of a line segment with the endpoints  and .

Possible Answers:

Correct answer:

Explanation:

This kind of problem can be quickly solved for by using the midpoint formula:

 where  and . Either of the endpoints may be assigned as either coordinate point. 

Substituting in the information, 

Example Question #9 : Midpoint Formula

What is the midpoint of a line that connects the points  and ?

Possible Answers:

Correct answer:

Explanation:

The midpoint formula is .

Therefore, all we need to do is plug in the points given to us to find the midpoint.

In this case, .

To find the -value for the midpoint, we add: . Then we divide by : .

To find the -value for the midpoint, we add: . Then we divide by : .

So our solution is .

Example Question #887 : Functions And Lines

Find the midpoint of the line segment with the endpoints of  and 

Possible Answers:

Correct answer:

Explanation:

To find the midpoint of a line segment, take the two endpoints and use the following formula:

 

Using this formula, we know

is the same as

 

Using substitution, we get

 

Therefore, the midpoint of the line segment formed by the endpoints  is .

Example Question #51 : How To Find The Midpoint Of A Line Segment

Find the midpoint of the line segment with the following endpoints: .

Possible Answers:

Correct answer:

Explanation:

To find the midpoint of this segment, we plug the values of our respective coordinates into the midpoint formula:

Simplify.

Example Question #889 : Functions And Lines

Find the point located exactly halfway between the points  and 

Possible Answers:

Correct answer:

Explanation:

Find the point located exactly halfway between the points  and 

We can find the midpoint of any pair of points via the following:

All we need to do is plug in our given points.

We'll call  point 2 and  point 1

So,

Example Question #891 : Functions And Lines

Two points,  and , are connected to form a line.  What is the midpoint?

Possible Answers:

Correct answer:

Explanation:

Write the midpoint formula.  The midpoint is the center of the line segment.

Substitute the values of the coordinates.

The midpoint is:  

Example Question #51 : How To Find The Midpoint Of A Line Segment

Find the midpoint of the line segment formed by the points

(-1, -3) and (3, 3).

 

Possible Answers:

(1, -1)

(-4, -6)

(1, 0)

(2, 2)

(2, 0)

Correct answer:

(1, 0)

Explanation:

To find the midpoint between two points, we use the following formula:

where  and  are the points given.  So, given the points

(-1, -3) and (3, 3), we can substitute into the formula.

Therefore, the midpoint between (-1, -3) and (3, 3) is (1, 0).

Example Question #893 : Functions And Lines

Find the midpoint of a line segment with the following endpoints:

Possible Answers:

Correct answer:

Explanation:

Finding the midpoint of a line segment only requires that we find the midpoint, or average of both the x and y components. In order to do that, we use the following formula:

For the points (2,6) and (12,12) plug in the numbers and solve:

 

This gives a final answer of  

Example Question #894 : Functions And Lines

Find the midpoint of the line segment with the following endpoints:

Possible Answers:

Correct answer:

Explanation:

Finding the midpoint of a line segment only requires that we find the midpoint, or average of both the x and y components. In order to do that, we use the following formula:

For the points (-2,5) and (4,7) plug in the numbers and solve:

 

This gives a final answer of  

Example Question #895 : Functions And Lines

Find the midpoint of the line segment with the following endpoints:

Possible Answers:

Correct answer:

Explanation:

Finding the midpoint of a line segment only requires that we find the midpoint, or average of both the x and y components. In order to do that, we use the following formula:

For the points (15,5) and (3,5) plug in the numbers and solve:

 

This gives a final answer of  

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