Question 80993
The key to all of these problems is to rewrite the given equation of the line in slope/intercept form. That is:
{{{y=mx+b}}}
Where m=slope and b=y-intercept.
So for your first problem:
{{{-3x-5y=15}}}
Solve it for y to get it into slope/intercept form:
{{{-5y=3x+15}}}
{{{y=-3x/5-3}}}
Now that the equation is in the right form, you can just read off the slope and y-intercept:
{{{highlight(slope=-3/5)}}}
{{{highlight(y-intercept=-3)}}}
Armed with this explanation, you should be able to handle the rest of the problems.
Good Luck,
tutor_paul@yahoo.com