Just to be different we'll start with intercept intercept form which says the line through x intercept (a,0) and y intercept (0,b) is

Through (4,0) and (0,-2) that's

Multiply through by the common denominator of 4 for standard form:
x - 2y = 4
For slope intercept form we solve for y
-2 y = -x + 4
y = (1/2) x - 2
We see our slope is (1/2) and we go through (4,0) so point slope form is
y - 0 = (1/2)(x - 4)
y = (1/2)(x-4)
I REALIZED I DID IT WRONG SO UH IGNORE WHAT I SAID IM SORRY D:
8418 just put it in a calculator next time
X = age of Mikhail
x+x-12 = 36
2x= 36 + 12
2x = 48
x = 48/2
x= 24
The equation: n - 4 = -15
Now let's solve our equation for n.
n - 4 = -15
Add 4 to both sides.
n = -11