What is the function equation of this table?

f(x) = x * -3

Step-by-step explanation:

so, you have x and you have f(x), as you can see -4 turns into 12... you basically have to divide, multiply, add or subtract for each value to see what they have in common, here it's easy since -4 * -3 is 12, -2 * -3 is 6, 0 * -3 is 0, etc etc. hope it helped : )

y=-3x

Step-by-step explanation:

(0,0) and (1,-3) are two points so 1-0=1 and -3-0=-3 and -3/1= -3.

you never say the total so we cant find the percentage used for petrol

step-by-step explanation:

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.