Answer this question fast and i will give you brainlest

1.the graph shows two lines, m and n.

how many solutions are there for the pair of equations for lines m and n? explain your answer.

2.consider the following pair of equations:

y = x + 4

y = −2x − 2

explain how you will solve the pair of equations by substitution. show all the steps and write the solution in (x, y) form.

the graph is for question 1.