Card 1 of 23
Why can the expressions in y=f(x)y=f(x)y=f(x) and y=g(x)y=g(x)y=g(x) be equated at an intersection?
A
Both graphs have the same yyy-coordinate.
B
They meet once: the line is tangent at a repeated root.
C
- (1+5, 4+5)(1+\sqrt{5},\,4+\sqrt{5})(1+5,4+5)
- (1−5, 4−5)(1-\sqrt{5},\,4-\sqrt{5})(1−5,4−5)
D
Setting the discriminant to zero gives k=−2k=-2k=−2.
Card 1 of 23
1.5.9 Intersection of a line and a curve Flashcards
23 flashcards on OCR (MEI) A Level Maths 1.5.9 Intersection of a line and a curve: the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.