Graphs as Sets of Solutions
Algebra 1 · Flashcards
ALGEBRA 1 · FLASHCARDS
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QUESTION
What is the solution set description for the equation
x
2
+
y
2
=
9
x^2+y^2=9
x
2
+
y
2
=
9
?
QUESTION
Identify whether
(
2
,
4
)
(2,4)
(
2
,
4
)
is on the graph of
y
=
x
2
y=x^2
y
=
x
2
.
QUESTION
Identify whether
(
−
1
,
3
)
(-1,3)
(
−
1
,
3
)
is on the graph of
y
=
−
2
x
+
1
y=-2x+1
y
=
−
2
x
+
1
.
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ANSWER
Yes, because
3
=
−
2
(
−
1
)
+
1
3=-2(-1)+1
3
=
−
2
(
−
1
)
+
1
. Substitution confirms:
3
=
−
2
(
−
1
)
+
1
=
3
3 = -2(-1) + 1 = 3
3
=
−
2
(
−
1
)
+
1
=
3
.
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