IB MAI HL Geometry & Trigonometry Topic 3.5 Geometric Transformations (id: d8e74

本题目来源于试卷: IB MAI HL Geometry & Trigonometry Topic 3.5 Geometric Transformations，类别为 IB数学

[填空题]
Trapezoid PQRS is translated by the vecx ;2(efdfti unw-8sh .tor/+fzqk i7k8za $\left(\begin{array}{c}-7\\ 2\end{array}\right)$ , then vertically stretched by a scale factor of $\frac{5}{3}$ and then reflected in the x -axis.
1. Determine a single transformation that maps the trapezoid PQRS to its image. Give your answer in the form ${\mathbf{x}}^{\prime }=\mathbf{A}\mathbf{x}+\mathbf{b}$ The area of the image is equal to k times the area of the trapezoid PQRS.
2. Find the value of k . $\frac{a}{b}$ a =    b =   

参考答案:
空格1: 5  空格2: 3 


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