An experiment consists of rolling two fair number cubes. what is the probability that the sum of the two numbers will be 8? express your answer as a fraction in simplest form.
ⓐ- 5/36
ⓑ- 1/9
ⓒ- 36/5
ⓓ- 31/36
i know that the answer is a, they give us the answer but we need to provide work and i don't understand how we get the answer.

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.