Starting from y = -x + 4, generate the ordered pairs for x = -1, x = 1/2, and x = 3. Provide exact fractional or integer y-values and then indicate which of those points lies on the x-axis.

(-1,-5), (1/2,-7/2), (3,-1); none of these points lie on the x-axis

(-1,5), (1/2,3.5), (3,1); (3,1) lies on the x-axis.

(-1,5), (1/2,7/2), (3,1); (-1,5) lies on the x-axis.

(-1,5), (1/2,7/2), (3,1); none of these points lie on the x-axis.