Algebra I –Wilsen
Unit 4: Graphing and Lines
Day Thirteen
BLOCK 2
Review for Quest
1
2
1. y = – x + 5
slope = ________ y-intercept = ________
2. y = 2x – 3
slope = ________ y-intercept = ________
2
3
3. y = 1+ x
slope = ________ y-intercept = ________
4. y = 6 – x
slope = ________ y-intercept = ________
5.
y=
3
x–6
2
slope = ________ y-intercept = ________
II. Write each equation in y = mx + b format. Then, identify the slope and y-intercept
and graph the line.
6.
2x – y = 6
equation in y = mx + b format: ___________________
slope = ________ y-intercept = ________
7.
x – 3y = –9
equation in y = mx + b format: ___________________
slope = ________ y-intercept = ________
8.
–2x + 3y = –6
equation in y = mx + b format: ___________________
slope = ________ y-intercept = ________
9.
4x – 2y = 8
equation in y = mx + b format: ___________________
slope = ________ y-intercept = ________
III. For each line graphed below, write the equation of the line in y = mx + b format.
(Hint: First find the slope and y-intercept!)
10.
Equation in y = mx + b format: ___________________________
11.
Equation in y = mx + b format: ___________________________
12.
Equation in y = mx + b format: ___________________________
13.
Equation in y = mx + b format: ___________________________
Answers:
1. slope =
3. slope =
, y-intercept = 5
, y-intercept = 1
2. slope = 2, y-intercept = –3
4. slope = –1, y-intercept = 6
5. slope =
7. y =
, y-intercept = –6
x+3
slope =
6.
8. y =
y-intercept = 3
y = 2x – 6
slope = 2 y-intercept = –6
x–2
slope =
y-intercept = –2
9. y = 2x – 4
slope = 2
y-intercept = –4
10. slope =
, y-intercept = 6,
so y =
11. slope =
, y-intercept = –4,
so y =
x+6
x–4
12. slope = –1, y-intercept = –1,
so y = –x – 1
13. slope =
so y =
, y-intercept = –1,
x–1