How do you figure out if a relation is a function? You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain is matched with exactly one element in the range. If so, you have a function!
You first identify what supplementary angles are,angles that add up to 180. 5x+2+8x+9=180 17x+11=180-11 17x=169 x=169divided by 17 x=9.9411 x=10 when rounded into the next value 8x*10=80+989
