How would the number line model be different if you wanted to find (-5)+(-6) ?

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

inverse operation of addition

y - 25 = 2 ( x - 10 ) should be the answer