Pls help me im so confused

Reflect the point (7,0) across the y-axis

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Which point has an coordinates of (2,0) ? a