To solve for a:

multiply 2a on both sides.

divide 2G on both sides.

Hope this helps :)
U would replace x with 0 in the equation and solve and then do the same but with y and those are ur x and y values of ur point
Ex: 2x+5y=15
2(0) +5y=15
5y=15
Y=3
2x+5(0)=15
2x=15
X=7.5
So ur point would be (7.5,3)
Answer:
Matter in its gas state has the most thermal energy than when it is a solid or a liquid.