Given :-
- The slope of the line through points (3,y) and (4,10) is 7 .
To Find :-
Solution :-
As we know that the slope of the line is difference of ordinate divided by the difference of absicca as ,
[tex]\longrightarrow[/tex] m = y -10 / 3 - 4
[tex]\longrightarrow[/tex] 7 (-1) = y -10
[tex]\longrightarrow[/tex] -7 = y -10
[tex]\longrightarrow[/tex] y = 10 -7
[tex]\longrightarrow[/tex] y = 3
Hence the required answer is 3.
