The equation of a straight line having slope 3 and y-intercept −4 is
A
3x−y−4=0
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B
3x+y−4=0
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C
3x−y+4=0
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D
3x+y+4=0
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Solution
The correct option is C3x−y−4=0 The equation of line having slope m and y-intercept c is given by y=mx+c Here, m=3,c=−4 Hence, equation of line is y=3x−4 ⇒3x−y−4=0 Option A is correct.