Problem 1
Plot 3 or 4 of the given points. For example, plot (4,16) and one other point given in the table. Draw a straight line through your points. Look carefully: Where does your line cross the y-axis? If y = 14 (just an example, not the correct value), then the y-intercept is (0,14).
To find the slope of your line, choose any 2 of the given 4 points. Find the slope of the line segment connecting those 2 points. For example:
24 - 16 8
m = ------------- = -------- = 2. The slope of this line is m=2.
8 - 4 4
Now you have both the slope (2) and the y-intercept (b). The equation of this line is thus
y = 2x + b (you found b earlier).
