Exam-Style Question on Simultaneous Equations
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 559. This question is typical of the type of question in a GCSE Higher examination. The use of a calculator is allowed.
Draw the graph of \(y = 2x^2 + 3x - 7\) for \( -3.5 \le x \le 2\). Draw suitable straight lines to find approximate solutions (to one decimal place) of the equations:
(a) \(2x^2 +3x - 9 = 0\)
(b) \(2x^2 +4x - 7 = 0\)
(c) \(2x^2 - x -5 = 3 - x\)
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