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Sagot :
you can find replcing x and y by the coordinates of the points
A : 5.-2 + 5 ≠9 not solution
B : 5.1 + 4 = 9 so 3.1 + 2.4 = 11 ≠4 not solution
C: 5.2 + = 9 so 3.2 + 2.-1 = 4 both are right then C is solution
D: 5.4 - 4 = 16 ≠ 9 not solution
A : 5.-2 + 5 ≠9 not solution
B : 5.1 + 4 = 9 so 3.1 + 2.4 = 11 ≠4 not solution
C: 5.2 + = 9 so 3.2 + 2.-1 = 4 both are right then C is solution
D: 5.4 - 4 = 16 ≠ 9 not solution
Answer:
(C) (2,-1)
Step-by-step explanation:
The given system of equations is :
[tex]5x+y=9[/tex] (1)
and [tex]3x+2y=4[/tex] (2)
Multiply equation (1) with 2 and then subtract equation (2) from it, we get
⇒[tex]10x+2y-3x-2y=18-4[/tex]
⇒[tex]7x=14[/tex]
⇒[tex]x=2[/tex]
Substitute the value of x=2 in equation (1), we get
⇒[tex]5(2)+y=9[/tex]
⇒[tex]10+y=9[/tex]
⇒[tex]y=-1[/tex]
Therefore, x=2 and y=-1. that is (2,-1).
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