Estimate the line of best fit using two points on the line.

slope = (80 - 20)/(8 - 2)

Slope = 60/6

Slope = 10

y = mx + b

b = y - mx

b = 20 - 10(2)

b = 0

So equation: y = 10x

Answer

B . y = 10x

Option B. y = 10x

Step-by-step explanation:

In this graph a line is given which passes through origin (0, 0),(2, 20) and (8, 80).

Since the standard form of the equation of a line is

y = mx + c where m is the slope of this line and c is the y- intercept.

Now slope m of this line will be m = (y - y')/(x - x')= (80 - 20)/(8 - 2) = 60/6 = 10

therefore equation will be y = 10x +c

Since line is passing through origin therefore c = 0.

Now the equation will be y = 10x.

Therefore Option B. y = 10x is the solution.

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)