An unknown number y is 20 more than an unknown number x. the number y is also x less than 2. the equations to find x and y are shown below:
y = x + 20
y = −x + 2
which is a correct step to find x and y?
a) multiply the equations to eliminate y.
b)add the equations to eliminate x.
c) write the points where the graphs of the equations intersect the x-axis.
d) write the points where the graphs of the equations intersect the y-axis.