Can anyone help me with this?

Which linear inequality is represented by the graph?

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?

What is the y-intercept of the line with the equation 3x + 4y = 12?