Choose the system of equations which matches the following graph:

a. 5x - y = 7
2x - y = 0

b. 5x - y = 7
2x + y = 0

c. 5x + y = -7
2x + y = 0

d. 5x + y = -7
2x - y = 0

Option B :  

Step-by-step explanation:

Intersecting point on the graph = (1,-2)

Substitute this point in the given options .

A.

Substitute (1,-2)

  and

and

So, this system of equations does not matches the graph.

B.

Substitute (1,-2)

  and

and

So, this system of equations matches the graph.

C.

Substitute (1,-2)

  and

and

So, this system of equations does not matches the graph.

D.

Substitute (1,-2)

  and

and

So, this system of equations does not matches the graph.

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40