Answer
a) Please see the graph. Linear
b) 600 is the difference between each pair, and this supports the line being linear.
c) $y=120x+5100$
d) 8,700 people
Work Step by Step
a) The graph was made using graphing software.
b)
$5700-5100=600$
$6300-5700=600$
$6900-6300=600$
c)
$m=(5700-5100)/(5-0)$
$m=600/5$
$m = 120$
$y=120x+b$
$5700=120(5)+b$
$5700=600+b$
$5700-600=b$
$5100=b$
$y=120x+5100$
d)
$2050-2020=30$
$y=120*30+5100$
$y=3600+5100$
$y=8700$
