Can someone me with this question?

What is the difference between the equations of a vertical and a horizontal line?

What rotation was applied to triangle def to create d’e’f’?

Which equation could represent the relationship shown in the scatter plot? y=−3x−2 y=−3/4x+10 y=−2/3x+1 y=9x−12 scatter plot with x axis labeled variable x and y axis labeled variable y. points go from upper left to lower right.