The lines represented by the equations 4y + 4x = 8 and y - x = -2 are what ?

How do you answer this question? (step by step)

An equation where variables are used to represent known values—function notation true or false

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.