Coordinate Geometry gmatprep

See the graphs I did with examples and counter examples for 1) 2) and 1&2)

1)
Intercept or not the circle.

2)
Intercept or not the circle.

1)and2)
Intercept or not the circle.

Try to draw a graph to see answer B is not possible.
Tell me if it's ok.

Hi Thanks very much for your post I am still not sure I understand how you can tell what a line would look like from the slope -1/10.

Thanks
Karen

y=-1/10x + b
It means you can draw an infinity of lines which are parallel, the difference is their b. b is the value of y when x=0
So you can draw many lines with a slope of -1/10 with b=-1 b=1 b=0 .......

-1/10 means the line goes down from left to right and for each 10 horizontal movement (x), the line goes down of 1 on the vertical (y).

Check your math review.