I'll solve for y
xy+(4(20))>x-5y(2+9-7)
xy+4(20)>x-5y(2+9-7)
xy+4(20)>x-5y(4)
xy+4(20)>x-20y
xy+80>x-20y
xy+20y+80>x
y(x+20)>-80+x
y>(-80+x)/(x+20)
The vertical line test is when you put vertical lines down the graph and if the point does not touch the line more than once, it passes and represents a function.
Answer:
Your answer is RSP. THE 3RD one
Answer:
15m+80 would be the correct equation
