1. Let us consider two points on the above graph. The two points are (0,4) and (-2,0).

The slope equation of a two points is given

Slope = y2-y1/x2-x1

Here for the two points the slope becom

Slope = 0-4/-2 =2

The rate of change of y with respect to x is 2

2) Linear: if a graph is said to be linear if the slope remains same througho

Non Linear: if a graph is said to be non linear if the slope chang

From the above graph let us take 3 Points they a

(0,4) (-2,0) (1,6)

The rate of change for (0,4) and (-2,0 ) is 2 are

shown in 1

The rate of change for (-2,0) and (1,6)

Slope = 6/3 =2

Since the slopes are same the graph is linear

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