Dull ysgrifenedig o rannu unrhyw rif cyfan efo rhif sy'n fwy na 10. (Lefel 5.)
Sut ydych yn plotio cyfesurynnau sy'n defnyddio rhifau positif yn unig?
Sut ydych yn plotio cyfesurynnau fel (-4, 2) neu (1, -3) ar set o echelinau? (Lefel 6.)
Unfortunately not the ones with chocolate chips.
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