All SAT Math Resources
Example Questions
Example Question #11 : How To Find The Midpoint Of A Line Segment
What is the midpoint of a line segment that begins at (0, -1) and ends at (4, 10)?
None of the given answers.
The midpoint of a line segment can be found by averaging the x-values and y-values of the given ordered pairs. In other words,
.
Take the average of the given x- and y-values of our ordered pairs.
Example Question #12 : Midpoint Formula
Find the midpoint between the point and the center of the given circle.
None of the given answers
Remember that the general equation for a circle with center and radius is .
With this in mind, the center of our circle is .
To find the midpoint between our two points, use the midpoint formula.
Example Question #13 : Midpoint Formula
The following coordinates represent the vertices of a box. Where does the center of the box lie?
None of the given answers
To solve this, we need to choose two points that lie diagonally across from each other. Let's use and . Now, we can substitute these points into the Midpoint Formula.
Example Question #14 : Midpoint Formula
Give the coordinates of the midpoint, in terms of , of a segment on the coordinate plane whose endpoints are and .
The coordinates of the midpoint of the line segment with endpoints and can be calculated using the formulas
and
.
Setting and , and substituting:
Setting and , and substituting:
The coordinates of the midpoint, in terms of , are
Example Question #12 : How To Find The Midpoint Of A Line Segment
The two endpoints of a line segment are and . Find the midpoint.
In order to find the midpoint of a line segment, you need to average the x and y values of the endpoints.
The midpoint formula is
After plugging in the values you get
for x
and for y
Therefore, the midpoint is at .