Answer:
![(x,y) = (-4,2)](https://img.qammunity.org/2022/formulas/mathematics/high-school/lc6xfaz2xem3biy6e9fjt6iql8istnxx0i.png)
Explanation:
Given
![x + y = -2](https://img.qammunity.org/2022/formulas/mathematics/college/qos7c44g1crnaxdmjdup22z0j752pjzpdy.png)
![y = 2x + 10](https://img.qammunity.org/2022/formulas/mathematics/college/oztd6eb2a56jjiy87rba8gi76qa8bmv30w.png)
Required
Determine the point of intersection of both equations (if graphed)
To do this, we solve for x and y
Substitute 2x + 10 for y in the first equation
![x + 2x + 10 = -2](https://img.qammunity.org/2022/formulas/mathematics/college/kml5oye4fuuhrklrgn0m1wa5nphpfy8qm4.png)
![x + 2x = -2 - 10](https://img.qammunity.org/2022/formulas/mathematics/college/d6ikby3y3m3b8mu3z97gvfwnpnkuj151nc.png)
![3x = -12](https://img.qammunity.org/2022/formulas/mathematics/high-school/5g98ka7j7pi94l7abt6efzp784bslsnjmb.png)
![x = -4](https://img.qammunity.org/2022/formulas/mathematics/high-school/s75mvvfsep316ix3e6orvljq9fp9c2vrbf.png)
Substitute
in the second equation
![y=2x +10](https://img.qammunity.org/2022/formulas/mathematics/college/im38cmz1mstq9lew860ihn5vem9oykr1da.png)
![y=2*-4 +10](https://img.qammunity.org/2022/formulas/mathematics/college/5r2fcan3wpn2ih7qr8g8kdew52cl7km4tc.png)
![y=-8 +10](https://img.qammunity.org/2022/formulas/mathematics/college/gv5vvoi77rnh2ctwter55y4s8dek30bozb.png)
![y = 2](https://img.qammunity.org/2022/formulas/mathematics/high-school/d5k2rv5rmh3vyar1fv9nhzrpy9al6014xf.png)
So, the point of intersection is:
![(x,y) = (-4,2)](https://img.qammunity.org/2022/formulas/mathematics/high-school/lc6xfaz2xem3biy6e9fjt6iql8istnxx0i.png)
See attachment for graph