Question 1/3 Determine if the relation represents y as a function of x. Input, x = {-2, 1, 2, 5, 8} and Output, y {4}

1) add 6 to 24, write the rest of the equation 10-2x= 30 subtract 10 from 30 2x=20 divide 20 by 2 and x=102) add 3 to -9 write the rest of the equation 4x+3=-6 subtract 3 from -6 4x=-9 x= -2.25  i don't know the rest sorry