3. 2x - y = - 7

4x - y = - 4

A) (-1.5, 4)

B) (1.5, 10)

C) (4, - 1.5)

D) (-1.5, - 2)

Question

Mathematics

Fernanda Banks

2 March, 12:38

3. 2x - y = - 7

4x - y = - 4

A) (-1.5, 4)

B) (1.5, 10)

C) (4, - 1.5)

D) (-1.5, - 2)

+3

Answers (1)

Know the Answer?

Hillary Hoffman · Answer 1

Multiply first equaton by - 1 and add to first

-2x+y=7

4x-y=-4 +

2x+0y=3

2x=3

divide 2

x=3/2

sub

2x-y=-7

2 (3/2) - y=-7

3-y=-7

minus 3

-y=-10

negative 1 times both sides

y=10

(3/2,10)

(1.5,10)

B is ansre

3. 2x - y = - 74x - y = - 4A) (-1.5, 4)B) (1.5, 10)C) (4, - 1.5)D) (-1.5, - 2)

3. 2x - y = - 7

4x - y = - 4

A) (-1.5, 4)

B) (1.5, 10)

C) (4, - 1.5)

D) (-1.5, - 2)