Reading a supplied parabola
Reading a supplied parabola
Secondary 2
12 marks
TGM Original Questions
The supplied graph shows a quadratic function.
- Find \(y\) when \(x=-1.5\).[2]
- Find the roots.[2]
- State the symmetry line.[2]
- Find the turning point.[2]
- Explain why there is no value of \(x\) for which \(y=5\).[2]
- Test the claim that its equation is \(y=x^2-2x+3\).[2]
Solution:
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Answer:(a) approximately \(-2.25\) (accept \(-2.2\) to \(-2.3\)) (b) \(x=-1,3\) (c) \(x=1\) (d) \((1,4)\) (e) maximum is \(4\) (f) false.
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