Lesson · Grade 7 · Mathematics
Plotting a Point with Integer Coordinates
- Grade 7
- Mathematics
- 1 min 8 s
- British Columbia
- BC7-MA-56
Starting at the origin, the video uses the pair (−4, 3) to show that the first number, x, says how far to go right or left and the second number, y, says how far to go up or down. It moves left 4 and then up 3, counting each step, then marks and labels the point, checks it lines up with −4 on the x-axis and 3 on the y-axis, and ends with the recap "go across by x first, then up or down by y."
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In one sentence
The question this lesson answers
How do we plot the point negative 4, 3 on a grid?
The x-axis goes across, and the y-axis goes up and down.
Transcript
What the lesson says
How do we plot the point negative 4, 3 on a grid?
The x-axis goes across, and the y-axis goes up and down.
The two axes cross at the origin, the point zero, zero.
In a pair, the first number is x and the second number is y.
x tells you to go right if it is positive, or left if it is negative.
y tells you to go up if it is positive, or down if it is negative.
Always start at the origin.
x is negative 4, so go 4 units to the left.
y is positive 3, so go 3 units up.
Mark a dot there and label it negative 4, 3.
Check that it lines up with negative 4 on the x-axis and 3 on the y-axis.
To plot any point, start at the origin, go across by x, then up or down by y.
Curriculum
Where this fits
- British Columbia, Grade 7
Mathematics, Geometry and measurement: Cartesian coordinates and graphingBC7-MA-56
Previous: The Four QuadrantsNext: Reading the coordinates of a point
The outcomes and strands follow the British Columbia curriculum.
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