Q. 275.0( 1 Vote )
If the line 
passes through the points (2, –3) and (4, –5), then (a, b) is
A. (1, 1)
B. (– 1, 1)
C. (1, – 1)
D. (– 1, –1)
Answer :
Given points are (2, -3) and (4, -5)
Firstly, we find the equation of line.
We know that,
Equation of line when two points are given:
Putting the values, we get
⇒y + 3 = - 1 (x – 2)
⇒ y + 3 = - x + 2
⇒ x + y = 2 – 3
⇒ x + y = - 1
(Intercept form)
Comparing the above equation with the given equation 
, we get the value of a and b
a = -1 and b = -1
Hence, the correct option is (d)
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