Question

Which equation does the graph below represent?

Answer 1

Given :  Graph  showing a straight line

To Find : equation  represented by graph

y = 2x

y = (1/2)x

y = (1/2) + x

y = 2 + x

Solution:

y = mx  + c   is equation of straight line

at x = 0 , y = 0

=> 0 = 0 + c

=> c = 0

y = mx + 0

=>  y   = mx

at  x= 2 , y = 1

=> 1  =  m ( 2)

=> m = 1/2

=> y  = (1/2) x

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