501 Geometry Questions

The Slopes of Perpendicular and Parallel Lines

Parallel lines have the sameslope. Perpendicular lines have negative recip-
rocal slopes. If a slope is ^12 , a perpendicular slope is –2.

Set 90

Choose the best answer.

441. Pam and Sam are hiking on two separate hills that have the same
     steepness. If each hill were graphed, they would
     a. have positive slopes
     b.have negative slopes
     c. be parallel lines
     d.be steep lines


442. In American homes, a standard stair rises 7′′for every 9′′. The
     slope of a standard staircase is
     a. ^79 .
     b.^27 .
     c. ^196 .
     d.^97 .


443. Line Q has a slope of –^19 . Line T is perpendicular to line Q. Line
     T will have what kind of slope, compared to line Q?
     a. positive and steep
     b.negative and steep
     c. negative and gradual
     d.positive and gradual


444. Bethany’s ramp to her office lobby rises 3 feet for every 36 feet.
     The incline is
     a. 

3

1

6

fo

fe

o

e

t

t

.

b.

1

1

2

fo

fe

o

e

t

t

.

c.  1

1

2

fo

fe

o

e

t

t.

d.

3

3

6

f

f

e

e

e

e

t

t

.

501 Geometry Questions