Which relation is a function? a. {(5, 3), (2, 8), (–5, –1), (4, 7), (2, 1)}
b. {(5, 3), (2, 8), (–5, –1), (4, 7), (5, 7)}
c. {(–5, 3), (2, 8), (–5, –1), (4, 7), (2, 2)}
d. {(5, 3), (2, 8), (–5, –1), (4, 7), (–2, 1)}

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

40 points. given: two congruent angles ∠c and ∠r are supplementary. prove: ∠r and ∠c are both right angles. it doesn't have to be exactly 10 rows.statements reasons1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 6. 6. 7. 7. 8. 8. 9. 9. 10. 10.

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your