Question

A conjecture and a portion of the flowchart proof used to prove the conjecture are shown.



Which equation best represents the information that should be in the box labeled 1?


2a + 4 = 20

4a = 10

4a + 4 = 20

2a = 20

Answer 1

Picture of the flowchart?

Answer 2

the previous step is XY = YZ

notice how they also give you XY = 4a + 4 and YZ = 20

according to the substitution property of equality, you can substitute 4a + 4 for XY and 20 for YZ into XY = YZ

perform that operation, and you'll have your answer

Answer 3

thank you very much

Answer 4

I understand exactly what you mean my question is what operation are you talking about?

Answer 5

substitute 4a + 4 for XY and 20 for YZ into XY = YZ

Answer 6

I see thank you for the clarification so basically you are trying to find out what equation best its for the substitution property of equality. Thank you