Question

In an experiment involving two variables, time (t), hours and height, (h) ; the following results were obtained.

Time )t) hours	0	0.7	1.5	2.1	2.8	3.2	3.6
Height (h) cm	100	82	64	46	32	18	10

1. On the grid provided, plot (1, h) where t is time and h is the height. 
2. Use the plotted points to draw the line of best fit for the data and hence determine the rate of change of height with time. 

Answer 1

1.   
   
2.   (50−0)cm
   Slope= (2−4)hr
   =−25cm/hr