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15 cards from this deck
2D plane with perpendicular xxx & yyy axes
(0,0)(0, 0)(0,0)
Four
Both positive
xxx negative, yyy positive
Both negative
xxx positive, yyy negative
Horizontal distance from origin
Vertical distance from origin
d=(x2−x1)2+(y2−y1)2d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}d=(x2−x1)2+(y2−y1)2
M=(x1+x22,y1+y22)M = \left( \frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} \right)M=(2x1+x2,2y1+y2)
y=mx+cy = mx + cy=mx+c
Slope of the line
yyy-intercept (where line crosses yyy-axis)
m=y2−y1x2−x1m = \frac{y_2 - y_1}{x_2 - x_1}m=x2−x1y2−y1
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