gmatbusters wrote:

Is the slope of line m passing through (7,4) positive?

1) The line m makes an angle of 30 deg with x-axis.

2) The y-intercept of line m is 2.

Statement 1) The line \(m\) makes an angle of 30 degrees with the x-axis

Not helpful. See diagram.

We have no idea whether the angle is formed this way / or this way \

Insufficient.

Statement 2) The y-intercept of line m is 2.

Two points now: (0,2) and (7,4)

We have enough information to determine whether the slope is positive or negative.

(No need to calculate, but slope is \(\frac{2}{7}\))

Sufficient.

Answer B

Attachment:

DSslope 2018.07.13.jpg [ 61.89 KiB | Viewed 196 times ]
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