__Gradient of a Straight Line__**If the points $A({x}_{1},{y}_{1})$ and $B({x}_{2},{y}_{2})$ lie on the straight line $y=mx+c$ , then gradient of ,the straight line**

$$m=\frac{{y}_{2}-{y}_{1}}{{x}_{2}-{x}_{1}}or\frac{{y}_{1}-{y}_{2}}{{x}_{1}-{x}_{2}}$$

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