Find the equation of the line through the points $\displaystyle {\left(\frac{{9}}{{2}},-{6}\right)}$   and $\displaystyle {\left(-\frac{{3}}{{2}},\frac{{4}}{{5}}\right)}$. Write your equation in slope-intercept form. Do not use decimals in your answer.

$\displaystyle {y}$ = Preview Question 6