What is the value of y in the following system? 5x + y = 9
10x - 7y = -18

y = 4

Step-by-step explanation:

given the 2 equations

5x + y = 9 → (1)

10x - 7y = - 18 → (2)

Multiplying (1) by - 2 and adding to (2) will eliminate the term in x

- 10x - 2y = - 18 → (3)

Add (2) and (3) term by term on both sides

(10x - 10x) + (-7y - 2y) = (- 18 - 18)

0 - 9y = - 36

- 9y = - 36 ( divide both sides by - 9 )

y = 4

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

i dont know

step-by-step explanation: