Put the equations in slope-intercept form and identify the equations as parallel orperpendicular lines.

Slope-intercept form for
3
x
+
y
=
7
:

Slope-intercept form for
3
y
=
-
x
-
3
:

Are the lines parallel or perpendicular?


a.
y
=
3
x
+
7

b.
y
=
1
3
x
+
1

c.
y
=
-
1
3
x
-
1

d.
y
=
-
7
x
+
3

e. Perpendicular
f. Parallel