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Mathematics
Mathematics
Problem
Which of the following equations represents a vertical straight line? a)
y
=
−
4
y=-4
y
=
−
4
b)
x
+
5
y
=
10
x+5y=10
x
+
5
y
=
10
c)
x
=
7
x=7
x
=
7
d)
2
y
+
6
=
0
2y+6=0
2
y
+
6
=
0
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