## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$(1,1)$
Equation 1 has variables isolated - select the substitution method. $x=y\qquad$(*) Replace x with y in the second equation: $y+y=2\qquad$ ... and solve for y $2y=2$ $y=1$ Now, back-substitute into (*) $x=y$ $x=1$ Form an ordered pair $(x,y)$ as the solution to the system $(1,1)$