I have not dealt with slope for a while but if its in the form y=mx+b then the x is the slope so it would be -3/4x and b is the y intercept. the y in the cords is -6
The way to copy a text is you first move your mouse over the text in-tell it turns blue then press control hit c then put your little mouse text thing where you want to copy the text click hit control hit v then your are done