Answer:
1
Step-by-step explanation:
We can use the slope formula
m = ( y2-y1)/(x2-x1)
= ( 4-2)/(1 - -1)
= (4-2)/(1+1)
= 2/2
= 1
Use the distance formula:
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Plug in the given coordinates:
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Simplify:
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You can leave it as:

or in decimal form as: 7.2
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No, he is not right.
Integer is a number that can be written without a fractional component, and 1 3/4 doesn't.
Here's an image for you to better understand.
The answer is A 100 square centimeters