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puteri [66]
3 years ago
10

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite.

Mathematics
2 answers:
ankoles [38]3 years ago
4 0
I hope this helps you



1)



x= -2y


2. (-2y)+4y=0


0=0


2)


x+2x= -3


x=-1


y= -2


3)


7x+2x+2=4



9x=2


x=2/9


y=2/9+1


y=11/9
Alinara [238K]3 years ago
4 0
<span>1.
x + 2y = 0
2x + 4y = 0

Coincident

------------------------------
2.
</span>y = 2x
<span>x + y = -3
⇒ x + 2x = -3
⇒ x = -1
⇒ y = -2
Solution is (</span><span><span>-1, -2)
------------------------------------
</span>
3.</span><span>
y = x + 1
</span>
<span>7x + 2y = 4
⇒ 7x + 2x +2 = 4
⇒ 9x = 2
⇒ x = 2/9
y = 1+ x = 11/9

Solution is </span><span>(2/9, 11/9)

-------------------------------------------

Hope it helps!
</span>
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