What is the equation of the line y + 5 = -3(x - 6) in slope intercept form? Y = MX + B

a.) y = -3x + 13

b.) y = -3x - 11

c.) y = -3x - 13

d.) y = -3x - 23

Does the point (1, sqrt 7) lie on circle shown.

Can some one me with these questions

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.