Using the linear equation, y = mx +b and solve for b
(7,,-6)

Step-by-step explanation:

first we need to find the slope bu using the slope formula and ur two sets of points

slope = (y2 - y1) / (x2 - x1)

(7,1)...x1 = 7 and y1 = 1

(-12,-6)x2 = -12 and y2 = -6

now we sub

slope = (-6 - 1) / (-12 - 7) = -7/-19 = 7/19

now...in y = mx + b form, the slope will be in them position

y = mx + b

slope(m) = 7/19

use either of ur points(7,1)...x = 7 and y = 1

now we sub and find b, the y int

1 = 7/19(7) + b

1 = 49/19 + b

1 - 49/19 = b

19/19 - 49/19 = b

- 30/19 = b < ur y int

so ur equation is : y = 7/19x - 30/19

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.

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.