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20 14 how to write the eighth question of Shijingshan model mathematics in grade three?
Square ABCD

∴∠DBC=45

When t≤ 1, BP=BQ.

CM∑PQ is above C.

∴△BPQ∽△BCM

When ∴0≤t≤ 1, the distance between PQs increases in the form of a linear function.

When 1≤t≤ radical number 2, BP=t, CQ=t- 1.

PQ decreases with the increase of x, which is not a linear function decrease.

choose one