Find the equation of a line having a slope of −2 and y intercept of 1.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → \(2xy+y=1\)
Note: It seems that there is a mistake in the original NTA paper, which prints Option (1) as \(2xy+y=1\). To arrive at the NTA answer, it should read \(2x+y=1\), as explained below.
A line with slope \(m\) and y-intercept \(c\) has the equation \(y=mx+c\) (the slope-intercept form).
\(m=-2\), \(c=1\)
\(y=-2x+1\)
\(2x+y=1\)