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Section 1.1 Lines in the Plane
1. Find the slope of lines.
2. Write linear equations given points on lines and their slopes.
3. Use slope-intercept forms of linear equations to graph (sketch) lines.
4. Use slope to identify parallel and perpendicular lines.
Problem #1: Find the slope-intercept form of the equation of the line that passes through the points (-1, 4) and (5, -12). Determine the slope and
Problem #2: Determine whether the lines
passing through the pairs of points are parallel, perpendicular, or neither.
: (4, 8), (-4, 2)
: (3, -5), (-1, 1/3)
Problem #3: Write an equation of a line that passes through the points with an
-intercept of 2 and
-intercept of 4. What is the slope of this line?
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