Review: Remember that a line written in y = mx + b format will always be a perfect straight line. If there are two equations, then it is called a systems because there are more than one. If we want to find out if and where they intersect (cross), then we can set them equal to each other and solve to find the exact coordinates. Set the following equations equal to each other to find the coordinates of their intersection: y = -12x + 9 and y= -12x + 17. EXPLAIN how you know that they will or will not intersect AND then provide two equations of your own that WILL NOT INTERSECT. **If you do not give me a valid explanation, then you will not receive full credit.** I have provided a picture link of a similar example to refresh your memories of solving systems of equations. :) :) *
Captionless Image

the image of (6, 9) under a dilation is (4, 6). the scale factor is

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.