I’m stuck please help me

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.

What term makes it inconsistent y=2x - 4

If y varies directly as x2 and y=6 when x=6, find the constant of variation.