Statement 1 Alone:
It is given that the slope of the line is negative. Thus, at one point or other, it will intersect the x-axis.
The point at which it will intersect the x-axis is:
mx + c = 0 or x = -c/m
Statement 2 Alone:
It is given that the y intercept is greater than 0. This means that the line intersects the y axis at a point y>0.
It is not necessary for the line to intersect the x-axis because the line can be parallel to the x-axis while having a positive y intercept
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From 650 to 710 to 750 - My Tryst With GMAT [Experience Thread]