Solve the system of equations using substitution.

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Mathematics

Description

Solve the system of equations using substitution.


Solve the system of equations using substitution.

3y = –1/2x + 2
y = –x + 9

a.  (10, –1)

b.  (–1, 8)

c.  (20, –4)

d.  (3, 6)

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Explanation & Answer

Something must be wrong here.

Only a. and d. obey the second equation y= -x + 9

but none obey the first equation : 3y=-1/(2x)+2

for a: -1/(2x)+2= -1/20+2 not equal 3y=-3

for d: -1/(2x)+2= -1/6+2 not equal 3y=18

So it can be solved but none of the solutions agree with it.

Please recheck problem



Anonymous
Really useful study material!

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