Answer:
A proportional relationship is one in which two quantities vary directly with each other. We say the variable y varies directly as x if: y = k x. for some constant k , called the constant of proportionality .
Step-by-step explanation:
your answer is x = 6
desmos
the answer is on the pic above
5*5+5=30 5*5-15=10 30/10= 3
4/4
1/4 plus 1/4 plus 2/4 is 4/4