Take test: 7.02 systems of equations quiz question 1 a system of equations that has at least one solution is called inconsistent. true false 2 points question 2 does the following system of equations have a solution? graph of lines y equals 2 x minus 5 and y equals negative 3 x plus 1 yes no 2 points question 3 what is the approximate solution of the following system of equations? graph of lines y equals negative x minus 5 and y equals x plus 9 (2, -7) (-7, 2) (7, 2) (-7, -2) 2 points question 4 solve the following system of equations by using the substitution method. x – y = 3 2x + 2y = 2 (3, 4) (-4, 5) (2, -1) inconsistent 2 points question 5 solve the following system of equations by using the substitution method. y = 6x – 11 -2x – 3y = -7 (1, 2) (2, 1) (-3, 1) (2, 4) 2 points question 6 solve the following system of equations by using the elimination method. x + y = 4 2x + 3y = 9 (3, 1) (-2, 1) (3, -1) inconsistent 2 points question 7 solve the following system of equations by using the elimination method. -4x – 2y = -12 4x + 8y = -24 (5, 3) (-6, -6) (3, 1) (6, -6) 2 points question 8 solve the following system of equations using matrices. 3x – 2y = 31 3x + 2y = -1 (5, -8) (3, 5) (-3, 9) (2, 8) 2 points question 9 solve the following system of equations using matrices. y = 2x – 1 6x – y = 13 (3, 5) (-3, 5) (5, 0) inconsistent 2 points question 10 a laboratory employee is mixing a 10% saline solution with 4% saline solution. how much of each solution is needed to make 500 milliliters of a 6% solution. 170 milliliters of the 10% solution and 340 milliliters of 4% solution 167 milliliters of the 10% solution and 333 milliliters of 4% solution 110 milliliters of the 10% solution and 210 milliliters of 4% solution 155 milliliters of the 10% solution and 300 milliliters of 4% solution 2 points