State the slope and y-intercept of the graph of 9-x=2y please explain how you got your answer. Thank you.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

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

What is the area of the shaded sector?