WILL GIVE BRAINLIEST IF RIGHT

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

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