(-7,-3) (-1,0) (9,5) and (13,7)
Answer:
Y=3x + 4
Step-by-step explanation:
Gradient = rise/run
=9/3
=3
Y-intercept is also 4
Since triangle ADE is similar to triangle ABC and the scale factor is 2, the following relation must be fulfilled:
![\frac{AD}{AB}=4](https://tex.z-dn.net/?f=%5Cfrac%7BAD%7D%7BAB%7D%3D4)
The, by substituting the given information, we have
![\begin{gathered} \frac{6x-8}{x+2}=4 \\ \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Cfrac%7B6x-8%7D%7Bx%2B2%7D%3D4%20%5C%5C%20%20%5Cend%7Bgathered%7D)
By multiplying both sides by x+2, we get
![6x-8=4(x+2)](https://tex.z-dn.net/?f=6x-8%3D4%28x%2B2%29)
which gives
![6x-8=4x+8](https://tex.z-dn.net/?f=6x-8%3D4x%2B8)
Then, by subtracting 4x to both sides, we have
![2x-8=8](https://tex.z-dn.net/?f=2x-8%3D8)
and by adding 8 to both sides, we obtain
![2x=16](https://tex.z-dn.net/?f=2x%3D16)
then, x is given by
![x=\frac{16}{2}=8](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B16%7D%7B2%7D%3D8)
Then, by substitutn
Try Using the Formula I=Prt
principal×rate×time
so
P-1200
R-.039
T-8 months