Write an equation for each line in slope intercept form

Blue = y = -2x - 5                           Red = y = -3x + 3

Step-by-step explanation:

Blue line

y = mx + b

y = y coordinate

m = slope (rise/run, up/over, change in y/change in x)

x = x coordinate

b = y intercept (where the line crosses the y-axis.

                                                                                               Blue             Red

1. Write the equation                                                          y = mx + b     y = mx + b

2. Substitute the numbers in the proper place.              y = 2/1 x - 5  y = 3/1x + 3

3. Check for the type of slope- (positive or negative)      y = -2x - 5    y = -3x + 3

   (Downhill slopes are always negative.)

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.