If you solve by graphing just remember that the slope of the lines are the x values and the y-intercept is the constant value.
But I will also solve by substitution:
Set one equation equal to the other:
x - 1 = 1/2 x + 1
Add one to both sides of the equation:
x = 1/2 x + 2
Subtract 1/2 x from both sides of the equation:
1/2 x = 2
Multiply both sides of the equation by two: x = 4. Plug this value of x into the first equation: y = 4 - 1 Solve for y: y= 3 Check the solution by plugging the values of x and y into either equation: 3 = 1/2(4) + 1 3= 2 + 1 3 = 3
Hope this helps and let me know if you have more questions!
