Line \( W Y \) is dilated to create line \( W^{\prime} Y^{\prime} \) using point \( Q \) as the center of dilation. What is the scale factor? Given that \( Q_{Y}^{\prime}=4.125 \), what is \( Q Y \) ?

10. Find the equations of straight lines each of which is parallel to and at a distance of \( \sqrt{5} \) from the line \( x+2 y-7=0 \).

A triangle has base \( 4 \frac{1}{7} \) feet and height \( 7 \frac{1}{6} \) feet. Find the area of the triangle as a mixed number.

5. Find the coordinates of the vertices of image of triangle \( A B C \) with vertices \( (2,2),(2,4),(6,3) \) afrer the specified dilation and draw the image. \( k=2 \), centre of dilation is origin

\( \left. \begin{array} { l } { P = \pi 2 r } \\ { 15.2 = \pi 2 r } \\ { \frac { 15.2 } { \pi } = 2 r } \\ { \frac { 15.2 } { 2 \pi } = r } \end{array} \right. \)

8. If \( \vec{P} \vec{Q}=P Q \), what is the angle between \( \vec{P} \) and \( \vec{Q} \) ?