I'm stuck on this question. The directions are "In exercises 15-24, tell whether the value is a solution of the inequality"

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.