All you need is in the photo

X + Y = 1 1

X - 2y = 4 2

Solving by substitution method

X = 4 + 2y 3

Putting the value of X in equation 1

4 + 2y + y = 1

4 + 3y = 1

3y = 1 - 4

3y = (-3)

y = (-3) /3

Putting value of y in equation 3

X = 4 + 2(-1)

X = 4 - 2

the answer is c.

for continuous functions, they continue in the same pattern and you have to find that pattern kinda like slope

which expression represents the approximate length of bc?

step-by-step explanation: