Mathematics
Grade 7
15 min
Follow directions on a coordinate plane
Follow directions on a coordinate plane
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1
Introduction & Learning Objectives
Learning Objectives
Interpret directional commands (e.g., 'move right,' 'move up') on a coordinate plane.
Accurately plot a starting point on a coordinate plane given its ordered pair.
Determine the new coordinates of a point after following a sequence of horizontal and vertical movements.
Trace a path on the coordinate plane by following multiple sequential directions.
Identify the final position (ordered pair) of a point after a series of movements.
Distinguish between movements along the x-axis and y-axis.
Ever wonder how GPS knows exactly where you are and how to get to your destination? 🗺️ It uses a system very similar to what we'll learn today!
In this lesson, you'll learn how to interpret and follow directions to move points around on a...
2
Key Concepts & Vocabulary
TermDefinitionExample
Coordinate PlaneA two-dimensional surface formed by the intersection of two perpendicular number lines, used to locate points.A graph paper grid is a visual representation of a coordinate plane.
OriginThe point (0,0) where the x-axis and y-axis intersect on the coordinate plane.If you start at the origin, you are at the center of the coordinate plane.
X-axisThe horizontal number line on the coordinate plane, representing horizontal position.Moving 'right' or 'left' changes a point's position along the x-axis.
Y-axisThe vertical number line on the coordinate plane, representing vertical position.Moving 'up' or 'down' changes a point's position along the y-axis.
Ordered PairA pair of numbers (x, y) that specifies the ex...
3
Core Formulas
Moving Right/Left (Horizontal Movement)
To move right by 'a' units, add 'a' to the x-coordinate: $(x, y) \rightarrow (x+a, y)$. To move left by 'a' units, subtract 'a' from the x-coordinate: $(x, y) \rightarrow (x-a, y)$.
Horizontal movements affect only the x-coordinate. Moving right increases the x-value, and moving left decreases it. The y-coordinate remains unchanged.
Moving Up/Down (Vertical Movement)
To move up by 'b' units, add 'b' to the y-coordinate: $(x, y) \rightarrow (x, y+b)$. To move down by 'b' units, subtract 'b' from the y-coordinate: $(x, y) \rightarrow (x, y-b)$.
Vertical movements affect only the y-coordinate. Moving up increases the y-value, and moving down decreases it. The...
5 more steps in this tutorial
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Challenging
A game piece landed on the origin (0, 0) after this sequence of moves: 4 units left, 2 units up, 3 units right. What were the starting coordinates of the piece?
A.(-1, 2)
B.(1, 2)
C.(-7, -2)
D.(1, -2)
Challenging
A robot at (-5, 10) is programmed to move. For every 2 units it moves right, it must move 3 units down. If the robot moves 6 units to the right in total, what will be its final coordinates?
A.(1, 7)
B.(1, 1)
C.(-11, 1)
D.(1, 19)
Challenging
A point starts at (-6, 2). It moves 10 units right and 4 units down. What are the coordinates of the midpoint between the starting point and the final ending point?
A.(4, -2)
B.(2, -1)
C.(-1, 0)
D.(-2, 0)
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