Greetings :)
To find slope of two points we will need to use this equation: [tex]\frac{y^2-y^1}{x^2-x^1}[/tex]
[tex]x^1[/tex] [tex]x^2[/tex] [tex]y^1[/tex] [tex]y^2[/tex]
( 6 , -12 ) ( 15 , -3 )
Now let's replace the equation with the numbers. (it will be a fraction).
[tex]\frac{-3-(-12)}{15-12}[/tex] = [tex]\frac{9}{9}[/tex]
The equation equals 9 over 9, which also equals 1.
The slope of the line is 1.
