Question 117941
first find equation of the line through points ({{{15}}},{{{1}}}) and ({{{4}}},{{{2}}})in {{{slope-intercept}}} form 

*[invoke find_equation_of_line 15, 1, 4, 2]


the {{{slope}}} of any line parallel to this line with slope {{{a=0.09}}} will be {{{a[1]=0.09}}} because {{{parallel}}} lines have {{{equal}}}{{{ slopes}}}

proof:

if we take {{{y[1]=0.9 + 6}}} as the line parallel to the line through given points, then we have :

*[invoke solve_by_graphing ".09", 1, 2.36, ".09", 1, 6]