The statements that are true are:
First option: All functions have dependent a variable
Second option: All functions have an independent variable.
Fifth option: A horizontal line is an example of a functional relationship
X would equal 4
set AB=AC
18=3x+6
minus 6 on both sides
12=3x
divide both sides by 3
x=4
Answer:
Step-by-step explanation:
You just need the distance formula here. It's very simple to follow:

which, for us, looks like this:
and
and
and
so
d = 15
X can equal 2/4
a can equal 1/4
Or x can equal 1/4
and a can equal 2/4
Or x can equal -2/4
And a can equal 5/4
There's a series of values so just pick one set above unless you need the others.