Comparing Two Linear Functions (Context - Graphically)

Question

Rashaad and Ethan are reading the same book. At the beginning of the month, Rashaad was on page 12 and Ethan was on page 32. Rashaad will read 4 pages per day and Ethan will read 2 pages per day. Let 

Answer 1

r = 12 + 4d

e = 32 +2d

12+4d = 32+2d

2d = 20

d = 10 days when they both have read the same number of pages in the book = 52 pages

graph the two lines and where they intersect tells you the day and pages read

plot r and e on the vertical axis

d on the horizontal axis

the lines intersect at (10, 52) = (the day, pages read = r = e)