Hey there :)
y =

Since this line is parallel to the line to be found, both have the same slope:

Coordinates: ( - 9 , - 2 )
y - ( -2 ) =

( x - ( -9 ) )


56m^2
see the steps from the pic
Y = 4x
hope that helps
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Answer:
5000 particles of size 10 nanometer should be stacked
Step-by-step explanation:
Average diameter of the of the human hair = 50 micron = 50 × 10⁻⁶ m
Now,
let the number of 10 nanometer i.e 10 × 10⁻⁹ m particle be 'n'
thus,
n × 10 × 10⁻⁹ m = 50 × 10⁻⁶ m
Therefore to find the number of 10 nanometer i.e 10 × 10⁻⁹ m particle,
n = 
or
n = 5000
Hence,
5000 particles of size 10 nanometer should be stacked