All topics basic Ideas Parallel lines triangles polygons Perimeter and also Area Similarity right Angles circles Geometric Solids name: coordinates Geometry

Theslope of a lineis a measure of the steepness and direction that a nonvertical line. Once a heat rises from left to right, the steep is a confident number. Number 1(a) reflects a line through a optimistic slope. As soon as a line falls from left to right, the slope is a an unfavorable number. Number 1(b) mirrors a line v a an adverse slope. Thex‐axis or any line parallel come thex‐axis has actually a slope of zero. Number 1(c) reflects a heat whose slope is zero. They‐axis or any line parallel come they‐axis has no defined slope. Figure 1(d) mirrors a line with an unknown slope.

You are watching: What is the slope of the x axis Figure 1 Different possibilities for slope that a line.

Ifmrepresents the steep of a heat andAandBare point out with works with (xl,y1) and (x2,y2) respectively, climate the slope of the heat passing throughAandBis given by the following formula. AandBcannot be points ~ above a upright line, sox1andx2cannot be same to one another. Lfx1=x2, climate the line is vertical and also the steep is undefined.

Example 1:Use Figureto uncover the slopes the linesa, b, c, andd. Figure 2 Finding the slopes of certain lines.

a. (a) Lineapasses with the point out (−7, 2) and (−3, 4). b. (b) Linebpasses through the point out (2, 4) and (6, −2). c. (c) Linecis parallel come thex‐axis. Therefore,m= 0.

d. (d) Linedis parallel come they‐axis. Therefore, linedhas an unknown slope.

See more: What Causes Water Coming Out Of Exhaust When Starting Car Exhaust?

Example 2:A heat passes through (−5, 8) through a steep of 2/3. If another allude on this line has works with (x, 12), findx. vault Midpoint Formula

following Slopes Parallel and Perpendicular lines

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