Graphing in All Four Quadrants and Coordinate Distances
Work through each section in order. For graphing problems, use the coordinate grid provided or sketch one yourself. Show your work for distance problems using absolute value.
Recall / Warm-Up
The point is located in which quadrant of the coordinate plane?
Which of the following points has a negative -coordinate and a negative -coordinate?
What is ?
Fluency Practice
The coordinate plane below shows four points. What are the coordinates of point ?
Point is at and point is at . What is the distance between them?
Point is at and point is at . These two points share the same -coordinate. What is the distance between them?
Point is at and point is at . What is the distance from to ?
Points and share the same -coordinate. Which expression gives the distance between them?
Varied Practice
The coordinate plane below shows four points. Which point has coordinates ?
Points and share the same -coordinate. They are connected by a horizontal segment on the coordinate plane below. What is the length of segment ?
To find the distance between and , first notice the points share the same ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ . That means they lie on the same ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ line. Subtract the ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ coordinates and take the absolute value: .
Point is at and point is at . What is the distance from to ?
A rectangle has three of its four vertices at , , and . What are the coordinates of the fourth vertex? Explain how you know.
Word Problems
A city park uses a coordinate grid where each unit represents 1 block. City Hall is at , the library is at , and the community center is at .
How many blocks is it from City Hall to the library?
How many blocks is it from the library to the community center?
If you walk from City Hall to the library to the community center, how many total blocks do you walk?
A hiking trail map uses a coordinate grid where each unit is 1 kilometer. The ranger station is at , the waterfall is at , and the campsite is at .
What is the distance from the ranger station to the waterfall?
What is the distance from the waterfall to the campsite?
Error Analysis
Priya is finding the distance from to .
She writes: distance .
Then she wonders: 'But if I go from to , I get . That gives a negative distance — something must be wrong!'
What should Priya do to make sure she always gets a correct, non-negative distance?
Marcus is finding the distance between points and .
He writes: distance .
"These points are 0 apart," he concludes.
What mistake did Marcus make? Choose the best description.
Challenge / Extension
A rectangle has vertices at , , , and . What is the perimeter of the rectangle? Show your work by finding the length and width separately.
Two hikers both start at the origin . Hiker A walks to point and Hiker B walks to point . Which hiker is farther north or south from the other? By how many units? Explain how you use coordinates and absolute value to find your answer.