(12,-6) (4,-2)
4/12= 1/3
-2/-6= 1/3
the scale factor is 1/3
A pair of tires is $216, so at that rate 4 tires would be $432. The managers special is $380 so $432-$380=$52 savings for 4. $52\4=$13 savings per tire.
Y - y1 = m(x-x1)
y - 7 = -3/2(x + 6)
Answer:
x=10
Step-by-step explanation:
So, we got our equation:

We'll multiply both sides by 2 to get rid of that fraction.
x+4=14
Then, we just subtract 4 from both sides.
x=10