Question

What is the length of the line segment shown on this coordinate grid? First quadrant coordinate grid with a line segment connecting points (1, 7) and (8, 7)

Answer 1

a line segment connecting points (1, 7) and (8, 7) would have slope
7-7
m = ------------- = 0.
8-1

Since this is a horiz line, we can safely state that it crosses the y-axis at y = 7. The length of this line segment is 8-1, or 7 (answer).