Answer :
y=3/4x-15/4. you add 4y and subtract 15 from both sides. then you divide 4 and that's Ur answer
[tex] the \ slope \ intercept \ form \ is : \\ \\ y= mx +b \\\\ 3x-4y=15 \ \ |\ subtract\ 3x\ to\ both\ sides\\\\-4y=-3x+15 \ \ | \ divide \ both \ sides\ by\ (-4) \\\\y= \frac{3}{4}x-\frac{15 }{4} \\\\slope : \ m=\frac{3}{4} [/tex]