Answer:
Its 21+84
Step-by-step explanation:
In order to get the answer to this question you will have to find the common factor and then divide the numerator and denominator by the common factor to get the answer.






Therefore the answer is "2."
Hope this helps.
Scale factor:
10/4= 2.5
X = 5 x 2.5 = 12.5
Y= 8/ 2.5 = 3.2
Z= 15/2.5 = 5
Rearranging y = 8x -4y = 12 in the y = mx + b form gives y = 2x - 3
y = 2x - 3
y = mx - 6 (already in y = mx + b form)
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Parallel lines have the same slope.
m = 2
Note that the two lines have the different y-intercepts and are not the same line.
Density is the correct answer.