Which relationships have the same constant of proportionality between y and x as the equation y=5/2x

How do i get my dad to stop making me gargle his pickle i want my mom to gargle my pickle not my dads

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap