Practice finding slope, equations of lines, and slopes of perpendicular lines.

Find the equation, in slope-intercept form, for the line shown below.

[Picture]

The slope is

\[ m=\answer {-\frac {2}{3}}. \]

The equation of the line is

\[ y=\answer {-\frac {2}{3}}x+\answer {\frac {11}{3}}. \]
Find the slope of a line perpendicular to the line from the previous problem.
\[ m_{\perp }=\answer {\frac {3}{2}}. \]
Find the equation, in slope-intercept form, for the line through the points \((2,-1)\) and \((6,5)\).

The slope is

\[ m=\answer {\frac {3}{2}}. \]

The equation of the line is

\[ y=\answer {\frac {3}{2}}x+\answer {-4}. \]

Find the slope of a line perpendicular to this line.

\[ m_{\perp }=\answer {-\frac {2}{3}}. \]