Y= 3x + 1 y= 2x - 3

When using the method called substitution, the y coordinate of the solution to the system of equations shown above is:
A. 13
B. -13
C. 11
D. -11

y= -11

Step-by-step explanation:

After rearranging equation 2, we get x= y+3/2

Sub it into equation 1

y= 3(y+3/2) + 1

y= 3y+9/2 + 1

y= 3y + 11 / 2

2y = 3y + 11

-y = 11

y = -11

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.