The answer is A and B. I showed my work below. I hope it makes sense. Let me know if you have any questions.
One side of a rectangle is 4 inches longer than the other side. The area of the rectangle is 21 square inches. Find the lengths
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For this case we have by definition, that the equation of a line in the slope-intersection form is given by:
Where:
m: It is the slope of the line
b: It is the cut point with the "y" axis
We have, according to the data provided, that the line is of the form:
That means that the slope is -1.
ANswer: