The vertices of a triangle are

MATHEMATICS · Single correct · GCSE · Mathematics · Geometry and Measures · Geometry and Measures

Problem

A(1,2)

B(4,2)

and

C(1,6)

. The triangle is transformed by

(x,y)\mapsto(3x,\,y)

. Find the area of the image of the triangle. (a)

12\text{ square units}

(b)

6\text{ square units}

(c)

18\text{ square units}

(d)

9\text{ square units}