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10 cards from this deck
Straight lines that never intersect
They have equal gradients
m1=m2m_1 = m_2m1=m2
The y-intercept
Same gradient, different y-intercepts
y−y1=m(x−x1)y - y_1 = m(x - x_1)y−y1=m(x−x1)
y=mx+cy = mx + cy=mx+c
m=tanθm = \tan θm=tanθ
Convert to y=mx+cy = mx + cy=mx+c form
When you have a point and gradient
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