2. A linear model for the data in the table is shown in the scatter plot. x y
1 2
2 6
5 6
6 9
7 11
9 10
10 13

(a) Which two points should you use to find the equation of the model? Circle the points on the graph.
(b) What is the slope of the linear model? Show your work.
(c) What is the equation of the linear model in point-slope form?
(d) What is the slope-intercept form of the equation you wrote in Part (c)? Show your work.
(e) What is the equation for the least squares regression line? Round the values for a and b to three decimal places. (Hint: Use a calculator or spreadsheet program.)

3.5 and 9

Step-by-step explanation:

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.