Solving Systems by Substitution
Pre-Algebra · Flashcards
PRE-ALGEBRA · FLASHCARDS
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QUESTION
What are the main steps of the substitution method?
QUESTION
Solve by substitution:
y
=
3
x
−
1
y = 3x - 1
y
=
3
x
−
1
and
y
=
x
+
5
y = x + 5
y
=
x
+
5
.
QUESTION
In substitution, the variables cancel and leave
0
=
4
0 = 4
0
=
4
. What does this mean?
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ANSWER
The system has no solution; the lines are parallel.
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