Why is causation so much more difficult to prove than correlation?

What is the equation of a line passing through (-6,5) and having a slope of 1/3

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?

5. write an equation for the line that is parallel to the given line and that passes through the given point. y = –5x + 3; (–6, 3)