which system of equations has a solution of approximately (0.6, –0.8)?

(a) x + 2y = -1  and  3x + y = 1

Step-by-step explanation:

I am not sure what the purpose was for the colored lines but I included them on the graph (below).

A

Step-by-step explanation:

The green line represents  x+2y=-1 and the purple line represents 3x+y=1.  These lines intersect at (0.6, -.08) That means that this system has a solution of  (0.6, -.08).

Required equation is x + 2y = -1

Step-by-step explanation:

Given Solution: ( 0.6 , -0.8 )

We have to system of equation whose solution is given.

Option 1).

From Solution,

x = 0.6   and   y = -0.8

equations: x + 2y = -1

LHS = x + 2y = 0.6 + 2 × (-0.8) = 0.6 - 1.6 = -1

RHS = -1

LHS = RHS

So, This option is correct.

Option 2).

From Solution,

x = 0.6   and   y = -0.8

equations: 3x - y = -1

LHS = 3x - y = 3 × (0.6) + (-0.8) = 2.4 - 0.8 = 1.6

RHS = -1

LHS ≠ RHS

So, This option is not correct.

Therefore, Required equation is x + 2y = -1

The answer is A

Step-by-step explanation:

I took to the unit test on edge

When you graph all the equations into a graphing calculator, you find the answer is:

C. x-2y=1 and 3x-y=-1

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

Step-by-step explanation:

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

Step-by-step explanation:

See the graph attached.

From this graph, it is clear that the green line and the Purple line intersect each other at an approximate point (0.6, -0.8).

Now, the green line passes through the x-intercept (-1,0) and y-intercept (0,-0.5).

Therefore, the equation of the green line will be

⇒ x + 2y = - 1

Therefore, the first combination or the fourth combination will be the answer.

Again, the purple line passes through the point (0,1) and has a negative slope.

So, the equation of purple line will be 3x + y = 1 {Since it has negative slope}

Therefore, the first combination will be the answer.

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

Step-by-step explanation:

look photo

The solutions are x+2y=-1 because -1=-1, x+2y=-1 because -1=-1 .