\fDetermine whether the following lines are parallel, perpendicular, or neither. 3. y =-x+5 4. y =- 2x + 3 y = - x - 5 y = -X- 7 Do the linear equations have the same slope?_ Do the linear equations have opposite reciprocal slopes? perperol . why Do the linear equations have the same slope?" Do the linear equations have opposite reciprocal slopes?_ This means that the two lines above are : This means that the two lines above are : parallel perpendicular neither parallel perpendicular neither Use the substitution method to find the solution. Choose the correct answer. 5. 3x + 2y =9 y = 3x 3 (3x) + 2y = 9 3x + 2(3x) = 9 9x + 2y = 9 3x + 6x = 9 9x = 9 y = 3(1) x=9 and y=2 : 9 y = 3 x = 1 (9, 2 (1, 3) 3 ( 3 x ) + 2y = 9 3.x + 2(3x) = 9 9x + 2y = 9 3x + 6x = 9 9x = 9 y = 3(1) *=3 and y=2 : 9 -9 y = 3 x = 9 (3, 2) (9, 3)se the substitution method to find the solution. Choose the correct answer. 6. y = -2x 5x + 6y = -7 5x + 6(- 2x) =- 7 Sx + 12x 5x + 6(- 2x) =- 7 17x =- 7 5x - 12x =- 7 y =- 2(1) - 7x =-7 y = - 2 + 17 + 17 + - X = 17: 1 =- 2 x = 1 (- 73. - 2) (1, - 2) 5x + 6(- 2x) =-7 5x - 12x = y =- 2(1) 5x + 6(- 2x) =- - 7x =-7 y = 2 5x + 12x =-7 : - 7 : - 7 17x =- 7 x = 1 + 17 + 17 * = 17 ; 1 = - 2 (1, 2) (17 , - 2 ) Use the elimination method to find the solution. Choose the correct process. 7. 4x - 5y = 9 -6x + 5y = -11 4x - 5y = 9 4x - 5y = 9 - 6x + 5y =- 11 add the two equations - 2x 6x + 5y =- 11 add the two equations - 2 - 2x :- 2 2 2 : - 2 :- 2 x = 1 substitute x=1 into either equation x =-1 substitute x=-1 into either equation 4(1) - 5y = 9 4 - 5y = 9 4(-1) - 5y = 9 4 - 4 4 - 5y = 9 - 5y = 5 + 4 + 4 :-5 :-5 5y = 13 y =- 1 (1 , -1 ) 5 : - 5 y =- 13 5 (-1 , - 13 )