Solution Bank Equations and Inequalities Target C
Answers to the Practice Problems are below in random order.
\(\begin{align}&y=\frac{1}{4}x-3\ & \ \ \ \ &\text{Perpendicular}\ & \ \ \ \ &y=3x+5\\\\
&3x+y=-14\ & \ \ \ \ &y=-\frac{1}{5}x-1\ & \ \ \ \ &y-3=-\frac{5}{9}\left(x+2\right)\
\text{or}\ y+2=-\frac{5}{9}(x-7)\\\\
&y+4=\frac{1}{6}\left(x-7\right)\ & \ \ \ \ &y=-13\ & \ \ \ \ &y=1.923x+81.477; r\approx0.983\ \text{(strong, positive)}; y\approx135.318\\\\
&\text{Neither}\ & \ \ \ \ &3x+2y=-4\ & \ \ \ \ &y=4.773x+3.873; r\approx0.924\ \text{(strong, positive)}; y\approx99.330\end{align}\)
Answers to the Practice Problems are below in random order.
\(\begin{align}&y=\frac{1}{4}x-3\ & \ \ \ \ &\text{Perpendicular}\ & \ \ \ \ &y=3x+5\\\\
&3x+y=-14\ & \ \ \ \ &y=-\frac{1}{5}x-1\ & \ \ \ \ &y-3=-\frac{5}{9}\left(x+2\right)\
\text{or}\ y+2=-\frac{5}{9}(x-7)\\\\
&y+4=\frac{1}{6}\left(x-7\right)\ & \ \ \ \ &y=-13\ & \ \ \ \ &y=1.923x+81.477; r\approx0.983\ \text{(strong, positive)}; y\approx135.318\\\\
&\text{Neither}\ & \ \ \ \ &3x+2y=-4\ & \ \ \ \ &y=4.773x+3.873; r\approx0.924\ \text{(strong, positive)}; y\approx99.330\end{align}\)