<PRE><B>Question 902267</B>
one problem at  a time 
5 problem s per 24 hours
no similar problems
your second problem is similar to the first. 
only the numbers change
y=mx+b
x=2 y=100
x=1.5 y=80
you have two points 
find the equation of the line

100=m2+b
80=m1.5+b
or solve this system
depends what you are learning right now
there are many other ways to solve this
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