Curves:
solving
The graphs of
y = ax
2
+ b
y = cx
2
+ d
cross each other in one or two places or not at all.
y = -x²+1,
y = x²
Number of crossing points: 0
1
2
y = 2x²+1,
y = x²
Number of crossing points: 0
1
2
y = 3x²-1,
y = 2x²+1
Number of crossing points: 0
1
2
y = 4x²+1,
y = x²+1
Number of crossing points: 0
1
2
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