Answer:
C
Step-by-step explanation:
the rate of change is constant in y (adding 3) and x (adding 2)
Ones and tens thats the anwers
Yes, set up your proportion: x/21 = 10/14
Cross multiply 14x = 210
Divide both sides by 14 and x= 15 cm
Answer:
x=1
y=-4
Step-by-step explanation:
Since -x-3=y subsitue that in at the top equation
![- x - 3 = - 7x + 3](https://tex.z-dn.net/?f=%20-%20x%20-%203%20%3D%20%20-%207x%20%2B%203)
![- x = - 7x + 6](https://tex.z-dn.net/?f=%20-%20x%20%3D%20%20-%207x%20%2B%206)
![6x = 6](https://tex.z-dn.net/?f=6x%20%3D%206)
![x = 1](https://tex.z-dn.net/?f=x%20%3D%201)
Plug x=1 back into the equation to solve for y.
![y = - 7(1) + 3](https://tex.z-dn.net/?f=y%20%3D%20%20-%207%281%29%20%2B%203)
![y = - 4](https://tex.z-dn.net/?f=y%20%3D%20%20-%204)