Which of the following equations have exactly one solution? Choose all answers that apply: A -13x+12=13x+13
B -13x+12=13x-13
C 12x+12=13x+12
D 12x+12=13x-12
I need correct answer and description, so I can put Brainliest

a

b

c

d

Step-by-step explanation:

Well lets look,

a)

If both slopes are different and have different y intercepts they have 1 solution.

So a has 1 solution

b)

Both slopes are different with different y intercepts.

1 solution

c)

Both slopes are different with different y intercepts

1 solution

d)

Different slopes different y intercepts

1 solution.

For proof look at the images below.

Thus,

the answer is a,b,c, and d.

Hope this helps :)

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: