Okay so first do 2x3 which equals 6. then add 6 to 1 and you would get 7. so 7/2 is your answer!!
denominator- bottom half of a fraction ex. in the fraction 5/7 the bottom number (7) is the denominator
numerator- top half of a fraction ex. in 5/7 the top (5) is the numerator
whole number-a number without fractions ex. 7, 29, 18
20 and that should be correct, if you need an explanation just ask
Plug 8 for y
8 = 2x + 4
Subtract 4
4 = 2x
Divide by 2
x = 2
Plug 16 for y
16 = 2x + 4
Subtract by 4
12 = 2x
Divide by 2
x = 6
Substitute 20 for y
20 = 2x + 4
16 = 2x
x = 8
Substitute 22 for y
22 = 2x + 4
18 = 2x
9 = x
So the values are 2, 6, 8, 9