An unknown number y is 12 more than an unknown number x. The number y is also x less than 17. The equations to find x and y are shown below.
Y = x + 12
Y = -x + 17
Which of the following statements is a correct step to find x and y?
Write the points where the graphs of the equations intersect the y-axis.
Multiply the equations to eliminate y.
Write the points where the graphs of the equations intersect the x-axis.
Add the equations to eliminate x.