If you know how to do this please help me then will give brainliest

The required equation is:

Step-by-step explanation:

We have x = Distance of goal posts

y = field Goals made

The data given is:

x       y

20     9

25      6

30       7

35       4

40       1

45        2

50        1

We need to find the regression equation y = bx + a

Where

Sum of all values of x = 245

Sum of all values of y = 30

Now, calculating mean using formula:

Mean of x (Mₓ) = 35

Mean of y () = 4.28

Sum of squares (SSₓ) = 700

Sum of products (SP) = -190

Now, finding b:

Now, finding a:

So, the required equation is:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -