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Byju's Answer
Standard IX
Mathematics
Solution of Linear Equation in 2 Variables
If š = š, ļæ½...
Question
If 𝒙 = 𝟐, 𝒚 = −𝟐 is a solution of the linear equation 3𝒙 − 𝟐𝒚 = 𝒌, then what is the value of 𝒌?
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Solution
The correct option is option C.
3𝒙 − 𝟐𝒚 = 𝒌
⇒ 3(2) − 𝟐(−2) = 𝒌
⇒ 6 + 4 = 𝒌
⇒ Hence, 𝒌 = 10
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Similar questions
Q.
Identify which of the following is/are linear equation(s) in two variables.
A.)
2
2
x
+
y
+
1
=
0
B.)
x
+
5
y
2
+
2
=
0
C.)
5
2
x
+
2
2
y
+
3
2
=
0
Q.
Find the value of 𝒌 for which (𝒙 + 𝟐) is a factor of
f
(
x
)
=
(
x
+
1
)
7
+
(
2
x
+
k
)
3
.
Q.
If the polynomial
g
(
x
)
=
x
2
+
5
x
+
k
is a factor of
p
(
x
)
=
4
x
4
+
2
0
x
3
−
2
6
x
2
−
1
0
x
+
1
2
then find the value of 𝒌. Also find all the zeroes of the polynomial.
Q.
Find the value of 𝒌 for which the equation
x
2
+
k
(
2
x
+
k
−
1
)
+
2
=
0
has real and equal roots.
Q.
Match the graphs with their respective linear equations.
𝒙 + 𝒚 = 𝟐 𝒙 + 𝒚 = 𝟎 𝟒𝒙 + 𝟕𝒚 = 𝟐𝟖
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