Solve the following system of equations:

x + 3y = −4
x + 5y = −6

a. (1,1)

b. (-1,1)

c. (1, -1)

d. (-1, -1)

 D. (-1 , -1)

Step-by-step explanation:

The given system of linear equations :

Subtract equation (1) from equation (2) , we get

Divide both the sides by 2 , we get

  (3)

Substitute the value of y=-1 in equation (1) , we get

Add 3 on both sides , we get

(4)

From (3) and (4) , the solution to the given system = (-1 , -1)

Hence, the correct  answer =  (-1 , -1)

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

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