How can i compare the method of using expanded form and the method of using place value to multiply a decimal and a whole number

Which linear inequality is represented by the graph? !

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)