| answers: c d b b b a d |
| The first probs. are
from 3.3
|
1.
Which equation best describes the above line ?
|
| ay
=-6 |
| bx
= 6 |
| cx
= -6 |
| dnone
of the above |
2.
Which equation best describes the above line?
|
|
ay = -6 |
|
bx = -6 |
|
cy = -4 |
|
dnota |
| 3. 30x - 60 = 30y. Which graph best describes
this equation ? |
a
 |
b
 |
|
cNOTA |
|
d |
| From 3.4
|
4. At 10:00 AM, Hakim rented a mountain bike
from the Big Wheels Cyclery. He returned the bike at 12 NOON after riding
10
mi. Hakim's paid $ 5.00 for the rental. What is Hakim's average speed in
mi/hour ?
|
|
a0.50
mi/hr
|
|
b5 mi/hr
|
|
c50 mi/hr |
|
dnota |
| 5. For the previous problem, what is
the rental rate in dollars/mi ? |
|
a0.050
dollars/mi
|
|
b0.50
dollars/mi
|
|
c5.0
dollars/mi
|
|
d50
dollars/mi
|
| e. nota |
| From 3.5. |
6.
What is the slope of this graph ? |
|
azero |
|
bundefined |
|
cnota |
|
d |
7.
What is the slope of this graph ?
|
|
a-1 |
|
b2 |
|
c0 |
|
d1 |
| e. nota |
| WRITTEN PROBLEMS. SHOW WORK ! |
8.
What is the slope of this line ? rise/run = 1 |
| 9. Find the slope of the line containing
the following to points: (-1,3) and (2,-5) slope = -8/3 |
| From 3.6. |
| 10. Find the slope and y-intercept of this
line: -3x + 4y = 12. Hint: Solve for y to get the equation in the
form y = mx + b, so you identify m = slope and b for the y-intercept =
(0,b) m = 3/4 and b = 3 |
| 11. Written problem. Graph y =
(3/5)x + 1 . y- intercept = (0,1) AND rise/run = 3/5 so the
line also goes through (5,4). |