The graph of $$\(y=x^{2}-x+1\)$$ is shown on the grid. By drawing a suitable line on the grid, solve the equation $$\(x^{2}-2 x-2=0\)$$. $$\[ x= ................ or x= ................ \]$$
Exam No：0580_s20_qp_43 Year：2020 Question No：12(b)
Answer:
line \(y=x+3\) ruled
\(-0.7\) to \(-0.8\)
\(2.7\) to \(2.8\)
\(-0.7\) to \(-0.8\)
\(2.7\) to \(2.8\)
Knowledge points:
E2.11.1
E2.11.2 Solve associated equations approximately, including finding and interpreting roots by graphical methods. (Find turning points of quadratics by completing the square.)
E2.11.4 Recognise, sketch and interpret graphs of functions. (Linear, quadratic, cubic, reciprocal and exponential.) (Knowledge of turning points and asymptotes is required.)
Solution:
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