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Category #5
100
Tell whether (3, -1) is a solution of the given systems: x - 2y = 5 2x - y = 7
it is a solution
100
solve by substitution y=5x-10 y=3x+8
(9, 35)
100
solve by elimination -x + y = 5 x - 5y = -9
(-4, 1)
100
show that each system has no solution 3x + y = 6 y = -3x + 2
substitute in -3x + 2 for y in the first equation
100
tell whether (2, 0) is a solution of the given inequality y> -2x - 2
tell whether (2, 0) is a solution of the given inequality y> -2x - 2(2, 0) is a solution
200
Tell whether (2, -2) is a solution of the given systems: 3x + y = 4 x - 3y = -4
Tell whether (2, -2) is a solution of the given systems: 3x + y = 4 x - 3y = -4 it is a solution
200
solve by substitution y= x + 5 4x + y = 20
(3, 8)
200
solve by elimination 2x + 5y = -24 3x - 5y = 14
solve by elimination 2x + 5y = -24 3x - 5y = 14 (-2, -4)
200
show that each system has infinitely many solution y = -x + 3 x + y -3 = 0
substitute in -x +3 for y in the second equation
200
tell whether (0, 0) is a solution of the system y < 3 y > x - 2
(0, 0) is a solution
300
it is not a solutionTell whether (-1, 5) is a solution of the given systems: -x + y = 6 2x + 3y = 13
it is not a solution
300
solve by substitution y - 4x =3 2x - 3y =21
solve by substitution y - 4x =3 2x - 3y =21 (-3, -9)
300
solve by elimination 2x + 5y = 0 5x + 2y = 30
(-6, 30)
300
show that each system has infinitely many solution -7x + y = -2 7x - y = 2
add the two equations
300
graph the linear inequalities y < 2x - 1 y > 2
graph