an angel is generally a supernatural being found in various religions and mythologies. in abrahamic religions and zoroastrianism, angels are often depicted as benevolent celestial beings who act as intermediaries between god or heaven and humanity.
in mathematics, the graph of a function f is, formally, the set of all ordered pairs (x, f( and, in practice, the graphical representation of this set. if the function input x is a real number, the graph is a two-dimensional graph, and, for a continuous function, is a curve.
3. 6+ 5/9
4. -6 2/9
i don't understand some of the numbers but i hope this helps a bit.