Graph the system of equations. then determine whether the system has no solution, one solution, or infinitely many solutions. if the system has one solution, name it. y= -6x + 6 y= 3x - 3

Can someone show me the steps to solve the problem?

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours