Slope of the line passes through the points (8,79.99) and (16,99.99) will be 2.5,here slope is positive means if the memory size of player will increase then the cost will increase too.
Slope of line:
The slope of a straight line is the ratio of the change in y to the change in x, generally denoted by m.
so for points (x1 , y1) and (x2 , y2)
slope(m)= (y2 - y1)/(x2 - x1) = rise/run
Interpretation:- If slope is positive, the graph of a line rises from left to right. If slope is negative, the graph of the line falls from left to right.
given,
costs of 8-gigabyte video MP4 player is $79.99
costs of 16-gigabyte video MP4 player is $99.99
Points are (8,79.99) and (16,99.99)
slope for the given points will be,
m = (99.99 - 79.99)/(16 - 8)
= 20/8
= 5/2
= 2.5
slope of the line will be = 2.5
here slope is positive means if the memory size of player will increase then the cost will increase too.
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