I wrote it down on paper, hope this is helpful.
Help please!! thanks
2 answers:
Your line passes through (0,1) and (1,5). This means that the increase of 1 along the x axis results in an increase of 4 along the y axis. In other words, the slope is 4.
Since the y intercept is 1, the equation of the line is
(using the form, where m is the slope and b is the y intercept).
Since we are interested in the area above the line, and the line is not included, we want the points with y coordinates strictly greater than those of the points on the line:
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