Use elimination to solve each system of equations, if possible. 7) 7) x - 2y =12 6x - ly =6 8) 8) x +By =-3 6x +9y = - 18 Write an equation in slope-intercept form for the line shown. 9) 9) Use elimination, substitution, or graphical methods to solve each system, if possible. 10) 6x - 6y =- 24 10) 12x - 12y =-26 Find a point-slope and slope-intercept form for the equation of the line satisfying the conditions. 11) Passing through (-9, -6) and (1, 1) 11) Use elimination to solve each system of equations, if possible. 12) -2x +6y =1 12) - 6x +1By =3 Solve the system of linear equations and/or inequalities. Then, plot each on graph paper with appropriate scale. 13) x - 3y s - 25 13) 2x - 3y >- 26 14) 7x +4y =- 8 14) -4x - 2y =4