## straight line slope imagery Calculator tool

slope *m*

= rise / run

= 7.6 / 9

= 0.8

(-9, -4)

(0, 3.6)

(0, -4)

*y*_{2} − *y*_{1}

= 3.6 − -4

= 7.6

*x*_{2} − *x*_{1}

= 0 − -9

= 9

*x*

*y*

click A or B and drag to move the imagery。

slope, also known as "angular number", indicates the degree of slope of a straight line relative to the horizontal axis. The tangent value of the Angle between a straight line and the direction of the positive half axis of the horizontal axis of a plane rectangular coordinate system is that the straight line is relative to the slope of the coordinate system. The straight line and the X-axis are perpendicular to each other, and the right tangent value is infinite, so the straight line does not have a slope. When a straight line L slope exists, for a first Function y=kx+b, k is the Function imagery slope.