The slope of a line is how steep the graph of the line is, or the rate of change of the y-coordinates of the points of the graph as you go from left to right. In the equation of a line, slope is denoted by m. It’s not known why m is used, but you can think “m is for move” to help you remember it’s how fast the graph “moves” (changes).
Read MoreTo determine whether two lines are parallel, intersecting, skew, or perpendicular, we’ll test first to see if the lines are parallel. If they aren’t parallel, then we test to see whether they’re intersecting. If they’re intersecting, then we test to see whether they are perpendicular, specifically. If they’re not intersecting, we skip the test for perpendicularity, and then we test for skewness.
Read MoreIn this lesson we’ll look at basic geometric figures like points, lines, line segments, rays, and angles, and we’ll talk about how to name them. There are very often multiple ways to name the same geometric figure. Angles, especially, are named in many different ways, so we have to be careful that we can recognize each of them.
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