Understand System Solutions as Intersections
8th Grade Math · Flashcards
8TH GRADE MATH · FLASHCARDS
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QUESTION
What must be true about a point
(
x
,
y
)
(x,y)
(
x
,
y
)
for it to be the intersection of two lines in a system?
QUESTION
Identify whether
(
1
,
2
)
(1,2)
(
1
,
2
)
is the intersection of
y
=
2
x
y=2x
y
=
2
x
and
y
=
x
+
1
y=x+1
y
=
x
+
1
.
QUESTION
Which option is true for
y
=
−
3
x
+
6
y=-3x+6
y
=
−
3
x
+
6
and
2
y
=
−
6
x
+
12
2y=-6x+12
2
y
=
−
6
x
+
12
: one solution, none, or infinitely many?
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ANSWER
Infinitely many solutions. Second equation is
2
×
2×
2
×
the first, same line.
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