Write the fact family formed by these numbers 3 9 12

The family formed by these numbers is 3x where x is any integer number.

Step-by-step explanation:

We have been given 3 9 12

We can see that given numbers are multiple of 3 so, we can say that the given numbers are from the family of 3x

Where x is any integer number when multiplied by 3 will give the multiple of 3.

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.

is only a line? i think so