If x and y are in direct proportion, then (x – 1) and (y – 1) are also in direct proportion.

State whether the statements are true (T) or false (F).

If d varies directly as t², then we can write dt² = k, where k is some constant.

State whether the statements are true (T) or false (F).

If a tree 24 m high casts a shadow of 15 m, then the height of a pole that casts a shadow of 6 m under similar conditions is 9.6 m.

If x and y are in inverse proportion, then (x + 1) and (y + 1) are also in inverse proportion.

If p and q are in inverse variation, then (p + 2) and (q – 2) are also inverse proportion.