Can someone please help me what’s the answer

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

Graph the line with the given slope m and y-intercept b. m=-3,b=1

The price for gasoline is represented by the equation y=3.69x, where y represents the total price for x gallons of gasoline. on a graph, the number of gallons is represented on the horizontal axis, and the total price is represented on the vertical axis. determine whether each statement describes the graph of the equation. select true or false for each statement