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GMAT Problem Solving (PS) | Re: Slope Angle

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Vini,

A line of the form y=mx+b, has a slope 'm'

Convert the given equation in this form to get y=-rt3x -6.

Since quesn deals in slope you need not calculate intercepts, clearly slope is negative and is tan(rt30 which is 60 degree. It lies in 3rd quadrant
Since slope is defined as what angle a line makes with x -axis, the angle with y axis is 90-60 = 30.

If you want to know about intercepts, the above eqn cut x axis when y=0 rt?
So when y=0, x = -6/rt3 = 3* 2 / rt3 = -2rt3.
Also when x=0, y=-6.
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