SOLUTION: Solve the linear system,graphically. Checkthe solution algebraically x - y = -5 Equation 1 x + 2y = 4 Equation 2

Algebra ->  Linear-equations -> SOLUTION: Solve the linear system,graphically. Checkthe solution algebraically x - y = -5 Equation 1 x + 2y = 4 Equation 2      Log On


   

Question 144013: Solve the linear system,graphically. Checkthe
solution algebraically

x - y = -5 Equation 1

x + 2y = 4 Equation 2
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x-y=-5 or -y=-x-5 or y=x+5 (red line)
x+2y=4 or 2y=-x+4 or y=-x/2+4/2 or y=-x/2+2(green line) now subtract.
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-3y=-9
y=-9/-3
y=3 answer.
x-3=-5
x=-5+3
x=-2 answer.
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+x+%2B5%2C+-x%2F2+%2B2+%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions x +5 and -x/2 +2).