2x + y = 5 x + y = 4 a. x = 1, y = 3 b. x = 1, y = 5 c. x = 3, y = 1 d. x = 9, y = -5

we are given with the system of equations

Now we can solve these equations together using substitution method

Now substitute x=1 in in the second equation we get

answer: answer is b.

[m < b = 120º]

step-by-step explanation:

the ratios are reciprocals im positive

step-by-step explanation:

they are all positive numbers so it wouldn't be the other ones