Oh, dude, when you graph, you typically go across first, like left to right on the x-axis, and then up or down on the y-axis. It's like following a map, but with numbers and stuff. So, yeah, you go across before you go up or down.
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across Good way to remember it, along the corridor then up the stairs.
THEY GO ACROSS NOT UP AND DOWN. THAT IS FOR COLUMNS.
The trend of a graph is the slope of any line on the graph that indicated a positive or growth factor and/or a negative or decaying factor. If the slope goes negative, the graph's line will go down thus indicating decay. If the slope becomes positive, the graph's line will go up thus indicating growth.
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Changes the gradient of the line E.g: 2x. The gradient is going to be 2, for every one along you go up two. If -2x the gradient will go to the right like 2x, but will go down two for every one going across :) hope this helped x