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12 cards from this deck
All points that lie on that particular line
y−y1=m(x−x1)y - y_1 = m(x - x_1)y−y1=m(x−x1)
m=y2−y1x2−x1m = \frac{y_2 - y_1}{x_2 - x_1}m=x2−x1y2−y1
They have the same slope
Slopes are negative reciprocals of each other
−1m-\frac{1}{m}−m1
ax+by+c=0ax + by + c = 0ax+by+c=0
y=mx+cy = mx + cy=mx+c
General form: ax+by+c=0ax + by + c = 0ax+by+c=0
Calculate the slope using slope formula
One point (x1,y1)(x_1, y_1)(x1,y1) and slope mmm
All satisfy same relationship between xxx and yyy
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