3. Sara is trying to justify a step in her paragraph proof. What is the property that she should use? AB BC, BC XY, therefore ABXY
Reflexive Property of Congruence
Equality of Congruence Property
Symmetric Property of Congruence
Transitive Property of Congruence

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Match each inequality to the number line that represents its solution

You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2