Answer
(a) A
(b) B
(c) Increase
(d) Decrease
(e) Increase
(f) Decrease
Work Step by Step
(a) A, because A is at a higher feet above B
(b) B, because a line drawn at B to find the slope will be much closer to the $y-axis$ than to the $x-axis$ compared to A
(c) It will increase because the elevation directly depends on $x$, since increasing values of $x$ causes increasing elevation from the graph
(d) It will decrease since since the elavation directly depends on the value of $x$, hence decreasing value of $x$ will produce a decrease in elevation as in the diagram
(e) This will also cause the elevation to increase because the elevation directly depends on $y$, hence an increase in the value of $y$ causes increases elevation from the graph
(f) This will cause the elevation to decrease because the elevation directly depends on $y$, hence an decrease in the value of $y$ causes decreases elevation from the graph
