Answer:
-17
Step-by-step explanation:
We know that the slope of a line passing through the points ( x ₁ , y₁) and ( x₂ , y₂ ) is ,
→ Slope ( m ) = ( y₂ - y₁) / ( x₂ - x ₁ )
- The points here are (12,-12) and (7,y) . Using formula of the slope , we have ,
→ m = -12 - y / 12 - 7
→ 1 = -(12+y)/ 5
→ 5 = -12 - y
→ y = -12-5
→ y = -17
Hence the value of y is -17 .
