Register
Help.... solve, using linear combination. 3x - y = 4 2x + y = 6 a. ( 3, 0 ) b. ( 0, -4 ) c. ( 2, 2, ) d. ( -1, -7 )
48.8k views
0 votes
Help....

solve, using linear combination.

3x - y = 4
2x + y = 6

a. ( 3, 0 )

b. ( 0, -4 )

c. ( 2, 2, )

d. ( -1, -7 )

User Nmw
by
5.5k points

1 Answer

4 votes
add the 2 equations
3x+2x-y+y=4+6
5x=10
x=2
now that we know x we can sub it back in one of the fisrt equations that we had
3×(2)-y=4
6-4=y
y=2
so the answer is C
User Paul Kononenko
by
5.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.8m questions

7.6m answers

Other Questions

Solve for y in terms of x. 2/3y - 4 = x y = x + 6 y = -x + 4 y = -x + 6 y = x + 4
Aliyah has $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?
Evaluate a + b when a = –16.2 and b = –11.4 A. –27.6 B. –4.8 C. 4.8 D. 27.6
What is the value of x? (-4) - x = 5
Find the quotient of 3,078 ÷ 27. A) 104 B) 109 C) 114 D) 119
Link Copied!