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Slideshow a Share Insert Format Slide Arrange Tools Add-ons Help Last edit was yesterday at 8:1 Calibri 28 + BIUA GO. A Demand - Quick Quiz Answer the following question about demand based on what you have learned so far in this unit. 1. Over the last week the price of petrol has decreased significantly. Using two demand graphs, show what happens to the demand for petrol and the demand for public transportation. 2. Illustrate and explain the impact of cheap petrol on demand for automobiles. 3. Identify and briefly explain three factors that will affect the demand for coffee. 4. How do the following concepts help explain the law of demand.(HL ONLY) . Income effect . Substitution effect