Line Intersections
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Flip to reveal answersHow to find intersection of two lines algebraically?
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Question
How to find intersection of two lines algebraically?
Answer
Set equations equal (or solve simultaneous equations).
💡 Hint
Substitution or elimination both valid.
Question
What indicates parallel lines in y=mx+c form?
Answer
Same gradient m, different intercept c.
💡 Hint
Parallel lines do not meet.
Question
What indicates coincident lines?
Answer
Same gradient and same intercept.
💡 Hint
Infinitely many intersection points.
Question
IB context for line intersection?
Answer
Break-even point or equal-cost point in models.
💡 Hint
Interpret x and y in context.
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Full study notes for Line Intersections
Topic 3.5 hub
Line intersections and perpendicular bisectors
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