G(x) = 2x-5. Find g(3), g( 1/2), g(0), g(4), g(4). If g(a) - 99, find a. f(x)= 3-4x. Find f(1), f(3), f(-2) ,f​​​​​​​​​​​​(1/2)

f(x)= x+3​​​​. find f(1), f(2), f(-3),f(​​​​​​​​​​​0),f(​​​1/2).
​​solve these please right now. no silly answer wolud not be allowed. ​​​​

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional