CPM Homework Banner
7-49.

Without graphing, find the slope of each line described below. Homework Help ✎

  1. A line that goes through the points and .

    Use a slope triangle or another method to determine the slope of the line.

    Another method is to first subtract the -values and the -values from each other.

    Substitute the differences into the slope formula.

  2. A line that goes through the origin and the point

    See part (a).

  3. A vertical line (one that travels “up and down”) that goes through the point .

    Vertical lines have an undefined slope.

  4. A line that goes through the points and .

  • See part (a).