Or the data set shown in the scatterplot, what is the best approximation of the slope for the line of best fit?
a) 1.2
b) 2.5
c) 4.2
d) 5..5

Option B.

Step-by-step explanation:

From the given graph it is clear that the coordinate of data points are (10,50), (20,100), (30,125), (40,150), (50,150) and (60, 175).

We need to find the BEST approximation of the slope for the line of best fit.

If a line passes through two points and , then the slope of the line is

Choose first and last point to find the approximate slope for the line of best fit.

Let as consider the line of best fit passes through the points (10,50) and (60,175).

The approximate slope for the line of best fit is 2.5.

Therefore, the correct option is B.

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.