Respuesta :

PsychrolutesMarcidus
Draw a line to connect the two points or fine the slope of the equation and calculate the co-responding x co-ordinate of 60


slope = [tex] \frac{change-in-x}{change-in-y} [/tex]
         = [tex] \frac{80-40}{4-2} [/tex]
         = [tex] \frac{40}{2}[/tex]
         = 20 

For every hour she reads, she reads 20 pages. 
Therefore in 3 hours she reads 60 pages
Mrarruda
She'd read 60 pages in 3 hours. Each gradient is the same because she reads at a constant rate. She reads 40 pages in 2 hours and 80 pages in 4 hours. That means 60/x = 20, hence 3 hours

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