Download Math 201 Chapter 3 Part 1

Math 201 Chapter 3 Part 1
Name___________________________________
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Decide whether or not the ordered pair is a solution of the equation.
1) (2, 4), 4x + 5y = 28
2) (0, 7), 6x - 7y = 49
1)
2)
Using the given coordinate, find the other coordinate that makes the ordered pair a solution of the equation.
3) 8x + y = -65, (0,
3)
)
Complete the table with ordered pairs that are solutions.
4) 5x + y =-22
4)
x y
-5
0
1
Find three ordered pairs that are solutions of the given linear equation, and use them to graph the equation.
5) y = 2x - 4
5)
Find the x- and y- intercepts. If there are no intercepts write "No x-intercept" or "No y-intercept".
6) 5x + 2y = 10
6)
7) -x +
5
y = -20
8
7)
1
Find the intercepts, and then graph the line.
8) x - y = 7
8)
9) y = 3
9)
Find the slope of the line that passes through the given two points. If the slope is undefined, state this.
10) (-6, 5) and (-5, 1)
10)
Find the slope and the y-intercept of the given line.
11) y = -2x + 7
11)
Graph using the slope and y-intercept.
12) y = -2x + 4
12)
2
Solve the problem.
13) A ladder is resting against a wall. The foot of the ladder is 6 feet from the wall, and the top
of the ladder is 20 feet from the ground. Find the slope of the ladder.
14) The cost, in dollars, of retaining the services of a computer repairman in Anchorville is
given by c = 52x + 20, where x is the number of hours worked. Find the slope and
y-intercept of the equation and explain what each signifies.
Find the slope and the y-intercept of the given line.
1
15) y = - x + 4
2
16) y =
13)
14)
15)
15
x-3
4
16)
Find the slope of the line that passes through the given two points. If the slope is undefined, state this.
17) (-8, -3) and (-8, 9)
17)
18) (-5, 7) and (2, 7)
18)
Complete the table with ordered pairs that are solutions.
19) y = -x + 5
19)
x y
3
5
0
Using the given coordinate, find the other coordinate that makes the ordered pair a solution of the equation.
20) 5x + y = -13, (
20)
, -13)
21) 12x + 6y = 6, (4,
)
21)
3
Answer Key
Testname: MATH 201 CH 3 PART 1
1) Yes
2) No
3) -65
4)
x y
-5
3
0 -22
1 -27
5)
6) (2, 0), (0, 5)
7) (20, 0), (0, -32)
8) (0, -7), (7, 0)
9) (0,3)
10) - 4
4
Answer Key
Testname: MATH 201 CH 3 PART 1
11) -2, (0, 7)
12)
13)
10
3
14) 52 signifies the hourly rate, and 20 signifies the overhead charge.
1
15) - ; (0, 4)
2
16)
15
; (0, -3)
4
17) Undefined
18) 0
19)
x y
3 2
5 0
0 5
20) 0
21) -7
5