KK23 wrote:
Does line Y=MX+C intersect X axis?
A)M<0
B)C>0
Statement 1 : M<0 means slope is negative,
so at some point the line will intersect x.
intersection point :
mx+c=0, so x= -c/m... (A is sufficient)
Statement 2: y intercept is greater than 0, so it will intersect y>0.
This line may be parallel to x-axis with positive y intercept.. so not sufficient.
Answer is A
Hope it is correct. i guess i came across this problem earlier
in Club forum
+1 Kudos....
Any idea is if we have a quadratic equation f(x)=Ax^2+C=y will this intersect with x axis if we know that A<0 or C>0??
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