Consider the expression 8-4+2. One student says the answer is 2 and another say it is 6. Which student is correct? Explain what
1 answer:
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You can do this one simply just by plugging in the values of x and y for each answer.
Note: (0,5) is just a way to right x=0 and y=5
Try answer A (0,5)
This is not true. 5 is not bigger than 5 so A is not the answer
Try answer B (1,7)
This is true so answer B works!
Might as well try answer C (7,1)
1 is obviously not greater than 12 so C does not work
The answer is B (1,7)
Note: (0,5) is just a way to right x=0 and y=5
Try answer A (0,5)
This is not true. 5 is not bigger than 5 so A is not the answer
Try answer B (1,7)
This is true so answer B works!
Might as well try answer C (7,1)
1 is obviously not greater than 12 so C does not work
The answer is B (1,7)