Can you please help me in understanding and answering these questions?

1) Much more stringent HSEA regulations came into force on 4 April 2016. These included classication of some industries into a high risk category with even more stringent requirements than other industries. Construction is one of the high risk industries. One sideeffect of these more stringent requirements will be to increase the cost of building new houses (I couldn't nd actual cost information other than claims about the cost increases. But one source I came across said that HSEA compliance costs ranged from $20,000$300,000 depending on the size of the business. Another source said that increased compliance costs including from the HSEA increased the cost of building a house by 16% from 2002 to 2007). a) What impact would you expect increased costs of building new houses to have on investment in new housing? Use a relevant diagram as part of your answer. b) Say net investment in new housing was zero before the increased construction costs. Given your answer in a) what happens to gross investment in new housing, net investment in new housing, the stock of housing, and the price of housing? Explain your answer using a relevant diagram as part of it