linear euation

Asked by Shivraj Raghu | 10th Jun, 2013, 10:31: AM

Expert Answer:

Please ask 1 question in 1 query.
 
Answer to your first question is
 
y = (4+4x)/2
 
To check if points A(-1,-1) lie on  the line, just substitute x = -1 and y = -1 and check if LHS = RHS
 
LHS = 2y-4x = 2(-1) - 4(-1)  = 2 which is not equal to RHS and hence, (-1,-1) does not lie on the line. 
 
Similarly for (2,7.5) LHS = 2(7.5) - 4(2) = 15-8 = 7 = RHS and hence, (2, 7.5) lies on the line. 

Answered by  | 11th Jun, 2013, 03:52: AM

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