Answer:
8. 13
9. y = 16.444
Step-by-step explanation:
8. You can find the distance between two points using the distance formula[tex]\sqrt{(y_{2} -y_{1})^{2} +(x_{2}-x_{1})^{2} } \\\\=\sqrt{(-10 -2)^{2} +(-7-(-12)^{2} } \\\\=\sqrt{(-12)^{2} +(5)^{2} } \\\\=\sqrt{(144 +25) } \\\\=\sqrt{169}\\ 13[/tex]
So the distance is 13
9 can be solved using a proportion.
5.4/9 = -10/y
9(-10)=5.4y
-90=5.4y
-90/5.4=y
16.444 = y
