jayne6enOse
Answered

What is the solution to the system of equations? Use the substitution method.

y-3x=7

21+9x=3y

AThere is no solution
BThere are an infinite number solutions
CThe solution is {1,10}
DThe solution is {28,0}

Verified Answer :

jhonyy9

y -3x = 7  from this result y = 7 +3x what value of y we need substituting in place of y inside second equation and will get 
21 +9x = 3y 

21 +9x = 3(7 +3x)
21 +9x = 21 +9x
        0 = 0

so this mean that there are an infinite number solutions so choice B. is right

Answer:

answer b

Step-by-step explanation:

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