Ask your niece to write down the coordinates for each of the labeled points.
Then, for each point, compare the y-coordinate to the x-coordinate and ask yourselves, "Does the y-coordinate equal eight times the x-coordinate?"
We write the coordinates as an ordered pair of numbers (inside parentheses, separated by a comma), listing the x-coordinate first:
(x,y)
The coordinates for one of the labeled points are (4,-2). Do you see which one?
Remember, the x-coordinate measures how many units the point is from the y-axis, to the left (positive) or to the right (negative). The y-coordinate measures how many units the point is from the x-axis, above (positive) or below (negative). :cool:
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