Answer:
[tex]y=-55x+570[/tex]
Step-by-step explanation:
The correct question is
Naoya read a book cover to cover in a single session, at a rate of 55 pages per hour. After 4 hours, he had 350 pages left to read.
Let y represent the number of pages left to read after x hours.
Complete the equation for the relationship between the number of pages left and number of hours.
Let
x -----> the time in hours
y ----> the number of pages left to read
we know that
The linear equation in point-slope form is equal to
[tex]y-y1=m(x-x1)[/tex]
In this problem we have
[tex]m=-55\frac{pages}{hour}[/tex] ----> is negative because the linear function is decreasing
[tex]point\ (4,350)[/tex]
substitute
[tex]y-350=-55(x-4)[/tex]
[tex]y-350=-55x+220[/tex]
[tex]y=-55x+220+350[/tex]
[tex]y=-55x+570[/tex]
