Question

Help pls
y = -x + 4
y = x - 2

Answer 1

Plug in y into the other y

X-2 = -x + 4

Put unknowns on one side and knowns on other side

2x = 6

X= 3

No need to find y because only 1 answer has 3 as x.

Answer is (3,1)

Answer 2

Option c

(3,1)

Explanation:

Solving system of equations:

y = -x + 4 ----------(I)

y = x - 2 -----------(II)

Add equation (I) & (II). So, x will be eliminated and we can find the value of y.

(I) y = -x + 4

(II) y = x - 2 {Now add}

2y = 2

Divide both sides by 2

y = 2/2

y =1

Substitute y = 1 in any of the equations. Here, we are substituting in equation (II)

1 = x - 2

1 + 2 = x

x = 3