Question	Power BI visual
Compare across categories	Bar or column, sorted
Trend over time	Line, or area for a cumulative total
Relationship between two measures	Scatter, or scatter with size for a third
Share of a whole	Stacked bar for a few parts; a table if the numbers matter
Read exact values	Table, or matrix for two grouping directions
One number, in context	KPI, or a card with a comparison beside it
Geography	Filled map for areas, Map for points

Check against your class slides.