Are the events a and b mutually or no

No

Step-by-step explanation:

We know that

any two events are mutually exclusive when

P(A or B)=P(A)+P(B)

we are given

P(A or B)

we can add P(A)+P(B)

now, we can simplify it

we can see that it is not equal to 2/7

so, A and B are not mutually exclusive

so,

No

x + 4/7

step-by-step explanation:

use cymath

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).