Slope formula = change in y/change in x. Remember: if the line rises to the right the slope is +, but if it rises left the slope is -.For the rest of your question: you can only solve for 1 missing variable at a time, so, first make sure the x & y spots are filled. If not, put in the coordinates you were given. Then to find the y-int (i.e. the place where the line crosses the y-axis so x=0), just let x=0 in the equation and out will pop the value of y.To find the slope (m) in the equation, sub the given y intercept into the b slot. Rearrange to m= form and you'll have it. Good luck!