Question

Richard says that the rule (x,y)--> (0.2x,y) describes a horizontal stretch because only the x-coordinates are affected by the real. Is Richard correct? Why or why not?

Answer 1

Although it is true that only the x-axis is affected, that is, on the horizontal, when multiplying by a number less than 1, there would not be a stretch but a narrowing.

That is, the horizontal part would be smaller, which contradicts what Richard says.