mrstealyogirl40
19.01.2022 •
Mathematics
Solve the equation below
Solved
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Ответ:
(-1,-1)
Step-by-step explanation:
y = 9x + 8 and y = -x - 2
then 9x + 8 = -x - 2
9x + x = -8 - 2
10x = -10
x = -1
y = -x - 2 = - (-1) - 2 = 1 - 2 = -1
Ответ:
When substituting the second equation into the first equation for y we can solve for x
-x - 2 = 9x + 8
-x = 9x + 10
-10x = 10
x = -1
Then we can plug x back into one of our original equations to find y
y = 9(-1) + 8
y = -9 + 8
y = -1
Ответ:
3 × (8 + 10) i think? im not sure..