21-03-2016
Mathematics

Answered

find the solution to the system of equations by using graphing or substitution y=2x-1 and y=x+3

Verified Answer :

21-03-2016

Lets use substitution, since there isn't any graphing method here.

y= x + 3
y = 2x - 1

x + 3 = 2x - 1
-x -x

x - 1 = 3
+1 +1

x = 4

Now solve for y

y = 2(4) - 1
y = 8 - 1
y = 7

We have the solution: (4,7)

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