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Contribució de: Faulkner
(Autor original: Heseltine)
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
Lines are parallel
because
Lines are perpendicular
because
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
These lines are:
Perpendicular
Parallel
-3–
7–
y=3x+7
y=    x
These lines are:
Perpendicular
Parallel
m1=
=m2
Lines are perpendicular
because
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
Lines are parallel
because
m1=
These lines are:
Perpendicular
Parallel
=m2
These lines are:
Perpendicular
Parallel
y=-5x
+0
0 –
- 8
y=     x+
m2=
m1=
These lines are:
Perpendicular
Parallel
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
Lines are parallel
because
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
Lines are parallel
because
Lines are perpendicular
because
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
y=-½x-6
y=-½x+
6  –
- 2
These lines are:
Perpendicular
Parallel
m1=
These lines are:
Perpendicular
Parallel
=m2
These lines are:
Perpendicular
Parallel
y=
-4–
6–
y=5x-4
m1=
These lines are:
Perpendicular
Parallel
6
1
=m2
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
Lines are parallel
because
Lines are perpendicular
because
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
Lines are perpendicular
because
they intersect.
they have the same slope.
they never cross.
they have opposite reciprocal slopes.
Altres proves d'interés :

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