Hi i'm a litte worry about my math and i need turning fractions to decimals

Following the graph as listed we can immidiately say that (1/2,-2) & (-2,-8) must be wrong. This can be seen by the fact that the line's don't intersect in quadrants 1 & 4. It also cannot be greater than -2 or y would not =-2. Thus it must be (-1/2,-2) or (-2,1/2) and because we know they don't intersect in quadrant two, the correct answer must be (-1/2,-2). So the last answer is correct for the intersection point.

TLDR: (-1/2,-2) is the correct answer.