(2,4) and (5,13) is m=-1/3 and (4,5) and (9,-3) is m=-8/5
So, is two integers, and they must be consecutive, meaning, the next one will have to be either 1 before the first or one after... anyhow.
let's say the first integer is "a".
then a consecutive integer to that one will be just 1 hop away, or say "a + 1", so there, those are the two integers.
now, we know that

so, is a positive integer, so it can't be -3.
what's the second integer? well is a + 1.
In plain and short, what value of "x" makes the expression |3x + 5| to 0?
well, we can check by simply setting it to 0 and solving for x.

notice, all you do is, get the x-value that makes the expression to 0, and then append the constant outside it as the y-value, and that's the vertex.
Answer:
23$ was each investment
Step-by-step explanation:
+3