CPM Homework Help : GC Problem 4-95

On graph paper, plot $ΔABC$ if $A(-1,-1)$ , $B(3,-1)$ , and $C(-1,-2)$ .

Enlarge (dilate) $ΔABC$ from the origin so that the ratio of the side lengths is $3$ . Name this new triangle $ΔA'B'C'$ . List the coordinates of the vertices of $ΔA'B'C'$ .
Rotate $ΔA'B'C'$ $90º$ clockwise $(\circlearrowright)$ about the origin to find $ΔA''B''C''$ . List the coordinates of the vertices of $ΔA''B''C''$ .
If $ΔABC$ is translated so that the image of $A$ is located at $(5,3)$ , where would the image of $B$ lie?

Use the eTool below to enlarge, rotate and translate triangle $ABC$ .
Click the link at right for the full version of the eTool: 4-95 HW eTool