Back to Topic 3.5 — Line intersections and perpendicular bisectors
3.5.1Math AI SL SL4 flashcards

Line Intersections

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Card 1 of 43.5.1
3.5.1
Question

How to find intersection of two lines algebraically?

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All 4 Flashcards — Line Intersections

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Card 1process

Question

How to find intersection of two lines algebraically?

Answer

Set equations equal (or solve simultaneous equations).

💡 Hint

Substitution or elimination both valid.

Card 2definition

Question

What indicates parallel lines in y=mx+c form?

Answer

Same gradient m, different intercept c.

💡 Hint

Parallel lines do not meet.

Card 3definition

Question

What indicates coincident lines?

Answer

Same gradient and same intercept.

💡 Hint

Infinitely many intersection points.

Card 4example

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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