Question 335606
<pre>
The problem is the same as if it had read: 

"Find the equation of a line that passes through the two points

(30,65) and (70,95), then find the y-coordinate of the point that

has x-coordinate 62."

{{{m=(y[2]-y[1])/(x[2]-x[1])}}}

{{{m=(95-65)/(70-30)=30/40=3/4}}}

{{{y-y[1]=m(x-x[1])}}}

{{{y-65=(3/4)(x-30)}}}

{{{y-65=(3/4)x-45/2}}}

{{{y=(3/4)x-45/2+65}}}

{{{y=(3/4)x-45/2+ 130/2}}}

{{{y=(3/4)x+85/2}}}

Plug in x=62

{{{y=(3/4)(62)+85/2}}}

{{{y=93/2+85/2}}}

{{{y=178/2}}}

{{{y=89}}}

Edwin</pre>