Algebra I
Name: __________________
SOL A.7 Slope-Intercept (Sec. 4.5)
_____ Block:
Date:
y = mx + b
Worksheet 4.5
Identify the slope & y-intercept for the following equations.
Then write the y-intercept as an ordered pair.
1)
y = 2x + 1
2)
y = -x
3)
y = 6 – 3x
m = ________
m = ________
m = ________
b = ________
b as ordered pair ________
b = ________
b as ordered pair ________
b = ________
b as ordered pair ________
4) y = -7 + 5x
5)
m = ________
m = ________
m = ________
b = ________
b as ordered pair ________
b = ________
b as ordered pair ________
b = ________
b as ordered pair ________
y=
2
x-1
3
6)
y=
1
x+8
4
Rewrite the following equations in slope-intercept form. Then, identify the slope
and the y-intercept of the line and write the y-intercept as an ordered pair.
7)
4x + y = 1
8)
x–y=6
9)
6x – 3y = -9
slope-int form: _______________
slope-int form: _______________
slope-int form: ______________
m = ________
m = ________
m = ________
b = ________
b as ordered pair ________
b = ________
b as ordered pair ________
b = ________
b as ordered pair ________
Graph the following equations using slope and y-intercept.
1
10)
y = 3x + 2
11) y = x – 5
4
m = ________ b = _______
m = ________ b = _______
b as ordered pair ________
b as ordered pair ________
Graph the following equations using slope and y-intercept.
12)
y = -x + 3
13)
y = -6x + 1
m = ________ b = _______
m = ________ b = _______
b as ordered pair ________
b as ordered pair ________
m = ________ b = _______
Rewrite the following equations in slope-intercept form and graph.
14)
-4x + 6y = 12
15) 3x + 6y = -6
m = ________ b = _______
b as ordered pair ________
m = ________ b = _______
b as ordered pair ________
m = ________ b = _______
Tell whether the graphs of the two equations are parallel. EXPLAIN your answer.
16)
y = 7x – 2 ; y = 7x + 7
17) y = -3x + 2 ; -7 + 3x = y