Chapter 5 - straigth-line graphs
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7 Terms
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What does it mean if a lines are parallel?
The lines have the same gradient
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How do you write a straight line?
ax + by + c =0
3
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How do we find the y intercept?
making x = 0
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How do we find the x intercept
Making y = 0
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How do we find a gradient of a line?
Subsitute the co-ordinates of the point into the equation
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What does it mean if a lines are perpendicular?
Thhe gradient is negative reciprocal
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What does pythagoras find?
The length of the line
Note 
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