Evalute the following products without actual multiplication

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove