Question

2 Points

Solve the system of equations and choose the correct ordered pair.
3x+4y= 38
5x - 5y=-30
O A. (2,6)
O B. (2,8)
O C. (3,9)
O D. (3,4)

Answer 1

Well let’s see here. To help you understand we’re going to fill in the blanks.
1.(2,6)
3(2) + 4(6)
6 + 24 = 30

Right away we know A isn’t the answer.

2.(2,8)
3(2) + 4(8)
6 + 32 = 38
Let’s now try the other equation.
5(2) - 5(8)
10 - 40 = -30
Now we know that B isn’t our answer neither.

3. (3,9)
3(3) + 4(9)
9 + 36 = 45
Option C isn’t our answer neither.

4. (3,4)
3(3) + 4(4)
9 + 16 = 25
Option D can’t be our answer.

So our answer is option B. (2,8)

Answer 2

b

Explanation:

the answer is b , x= 2 and y= 8, observe: 3.2+ 4.8= 6+32=38 , second ecuation 5.2-5.8= 10-40= -30