Pleaseee whelp
3x-y=30

x = 10 + 0.3

Step-by-step explanation:

Simplifying

3x + -1y = 30

Solving

3x + -1y = 30

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'y' to each side of the equation.

3x + -1y + y = 30 + y

Combine like terms: -1y + y = 0

3x + 0 = 30 + y

3x = 30 + y

Divide each side by '3'.

x = 10 + 0.3333333333y

Simplifying

x = 10 + 0.3333333333y

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

you already gave the answer

step-by-step explanation: