1. What is the equation of the line whose y- intercept is -3 and makes an angle of 45° with the positive x-axis?
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By: anil on 05 May 2019 02.12 am
Slope of line making an angle of 45° with the positive x-axis = $$tan (45$$°$$) = tan (45$$°$$) = 1$$ Equation of line having y-intercept = $$c$$ and making slope $$m$$ is $$y = mx + c$$
Here $$c = -3$$ and $$m = 1$$ => $$y = (1 imes x) + (-3)$$ => $$x - y = 3$$ => Ans - (C)
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Here $$c = -3$$ and $$m = 1$$ => $$y = (1 imes x) + (-3)$$ => $$x - y = 3$$ => Ans - (C)