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7 Cards in this Set
- Front
- Back
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Gradient |
M=(y2-y1)÷(x2-x1) |
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Equation of a straight line |
Y=mx+c |
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Length of straight line |
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Parallel lines |
M1=M2 |
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Perpendicular line |
M1xm2=-1 |
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Perpendicular distance from (x1,y1) to ax+by+c=0 |
D=modulus of (ax1+by1+c)÷((a^2+b^2)^1/2) |
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Angle between two lines |
Tan theta= (m1-m2)÷(1+m1×m2) |
