In the xy-plane, at what two points does the graph of y=(x+a)(x+b) intersect the x-axis?
2) The graph intersects the y-axis at (0;6).
Please explain. Thank you.
Insuff, because infinite number of possibilities..
if y-intersects at (0,6), then a*b = 6.
so equation is not --> y=x^2+(a+b)*x+6
before I try to combine st. 1, I know that the parabola is going to open up. I feel that this is Insuff.
I get y=x^2-1*x+6, but this does not have integer roots for X...
so by the combination of both, it does not intersect the x-axis.
C is my answer... but would E work here?