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Mathematics
Mathematics
Problem
Match pairs of lines which are perpendicular:
A
x
+
2
y
=
1
x + 2y = 1
x
+
2
y
=
1
B
2
x
+
y
=
−
3
2x + y = -3
2
x
+
y
=
−
3
C
y
−
7
=
2
(
x
+
4
)
y - 7 = 2(x + 4)
y
−
7
=
2
(
x
+
4
)
D
y
=
2
x
−
7
y = 2x - 7
y
=
2
x
−
7
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