need help please explain in the simplest way thank you

1. Find the slope of the Ivie passing through the points (7, 1) and (7, 12 ) 2 . Use the point on the livie and the slope of the line to find the general to form of the equation of the line and ( - 3, 5 ) and slope me - 3/ 2 3. You are given the dollar value of a product in 2007 and the rate at which the value of the term is expected to change during the next 5 years. Use this information to write a linear equation that awes the dollar value of the product in terms of the year ( Let represent 2008 ) . 2008 Value Rate 23 $ 12, 500 $800 increase pertear to 2007 Value Rate 8 12.500 $800 increase per year . which sets of ordered pairs represent functions from to Cacplain A = ( 10 , 20 , 30, 40 ) and B = ( 0 , 2, 4, 6 ) ( ( 20 , 4 ) , ( 40 , 0 ) ( 20 , 6 ) ( 30 2 ) ) b. ( (10 , 4 ) ( 20 , 4 ) , (30 , 4 ) ( 40 4 ) ) ' C. ( ( 40 , 0 ) , ( 30 , 2 ) (20 , 4 ) . ( 10 , 6 ) ) d. ( ( 20, 2 ) , ( 10, 0 ) , 2 40, 14 ) j