Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
3. Functions
Intro to Functions & Their Graphs
1:16 minutes
Problem 21f
Textbook Question
Textbook QuestionIn Exercises 19–30, find the midpoint of each line segment with the given endpoints. (-2, -8) and (−6, −2)
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Midpoint Formula
The midpoint formula is used to find the point that is exactly halfway between two given points in a coordinate plane. It is calculated using the formula M = ((x1 + x2)/2, (y1 + y2)/2), where (x1, y1) and (x2, y2) are the coordinates of the endpoints. This concept is essential for determining the midpoint of a line segment.
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Coordinate Plane
A coordinate plane is a two-dimensional surface formed by the intersection of a horizontal axis (x-axis) and a vertical axis (y-axis). Each point on this plane is represented by an ordered pair (x, y), which indicates its position relative to the axes. Understanding the coordinate plane is crucial for visualizing and solving problems involving points and line segments.
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Ordered Pairs
Ordered pairs are pairs of numbers used to represent the coordinates of a point in a two-dimensional space. The first number corresponds to the x-coordinate, and the second number corresponds to the y-coordinate. Recognizing and manipulating ordered pairs is fundamental for applying the midpoint formula and performing other operations in coordinate geometry.
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