Respuesta :

Answer:

17

Step-by-step explanation:

since you are given that x is 9 all you have to do is plug it in. So 1-2(9) 2 times 9 is 18 so 1-18=17

y = 1 - 2x
y = 1 - 2(9)
y = 1 - 18
y = -17

The answer is -17