4 years ago

Solve the system of equations algebraically: 2x - y = -1 3x + y = 6

1 answer:

7 0

Using substitution method
from the first equ
2x+y=-1
y= -1-2x --------(3)
put equ 3 into equ 2
3x -1-2x=6
3x-2x=6+1
x =7
put x+7 into equ 1
2(7) + y = -1
14 + Y =-1
y= -1-14
y=-15
so
x=7 and y=-15<span />

You might be interested in

Which of the following best describes the relationship between the variables on the scatter plot below?

lesya [120]

Answer:

Step-by-step explanation:

C Linear association

7 0

3 years ago

Read 2 more answers

What are a possible set of lengths that can give you an area of 26?

rodikova [14]

2 and 14
2 and 14
2 and 14
2 and 14
2 and 14

3 0

4 years ago

Distribute and simplify these radicals. 23-(V+ 3) O 2V5 + 6 02/15 O 30 O 6/2+6

zhannawk [14.2K]

Answer:

Step-by-step explanation:

6 0

4 years ago

Which of the following rules is the composition of a dilation of scale factor 2, then a translation of three units to the right?

SIZIF [17.4K]

Answer:

The answer is C: (2x +3, 2y)

Step-by-step explanation:

When applying the dilation of a scale factor of 2, you have to apply it to both the x and y coordinate, which means you are multiplying the coordinates by 2.

Let's assume the coordinates you start with are (x, y). Apply the dilation of 2.

(x, y) -----> (2x, 2y)

Now you are moving the figure right. When moving right, this only effects the x coordinate since the x axis moves left and right. Moving right indicates you will add the number of units translated to the x coordinate.

Translation 2 units right:

(2x, 2y) -----> (2x +3, 2y)

8 0

2 years ago

What is the first step in solving this system of equations by Substitution?

Finger [1]

Answer:

you nice

Step-by-step explanation:

hi 3 days

6 0

4 years ago