Question 258350
g=9 m=34
g=19 m=43
(g-g)/(m-m)=slope
19-9/43-34=slope
10/9=slope
g=10/9*m+b
9=10/9*34+b
81=10*34+9b
81=340+9b
81-340=9b
-259=9b
-259/9=b
{{{g=10/9*m-259/9}}}
check
19=10/9*43-259/9

19=430/9-259/9
19=171/9
ok
check
9=10/9*34-259/9
9=(340-259)/9
9=81/9

ok