Page 101 - Math Course 3 (Book 1)

Slope of a Line

Compare Slopes
Solve the Test item
first route MULTIPLE-CHOICE TEST ITEM
There are two hiking trails that connect a nature
rise center to a waterfall. The first trail rises vertically 3
slope = feet for every 40-foot stretch. The second trail rises
run
4 yards vertically 5 feet for every 30-foot stretch. Which
= statement is true?
30 miles
4 yards
= 30 miles = 52,800 yards
52, 800 yards
or about 0.000076

second route A. The first trail is steeper than the second trail.

rise B. The second trail is steeper than the first trail.
slope =
run
8 yards C. Both trails have the same steepness.
=
70 miles
D. You cannot determine which trail is steeper.
8 yards
=
123, 200 yards
or about 0.000065

first route second route Answer
0.000076 0.000065

0.000076 > 0.000065, so the first route is steeper
than the second route.

Answer The answer is A

Your Turn!

Zero and Undefined Slopes

Find the slope of the line. Find the slope of the line.

A. 2 A. 0
1
B. 0 B. – 3

C. 1 C. –1
2
D. undefined D. undefined

Answer Answer

93