Set these 2 distances to equal each other

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

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!