Properties of lines - HiSET

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Question

Give the coordinates of the midpoint of the line segment whose endpoints are the intercepts of the line of the equation

.

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Answer

The x-intercept and y-intercept of the line of an equation can be found by substituting 0 for and , respectively, as follows:

x-intercept:

Substitute and simplify:

Solve for by dividing by 2 on both sides:

The x-intercept of the line is located at

The y-intercept can be found by setting and solving for in a similar fashion:

The y-intercept is located at .

The midpoint of a line segment, given its endpoints and , is located at

;

substituting accordingly,

The midpoint is located at .

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