Solve by using the substitution method 3x + y = 13 5x - 2y= 18

Solve for the first variable in one of the equations, then substitute the result into the other equation. Point Form: (4,1) Equation Form:  x = 4, y = 1Hope this helps!~ I need everyone to know something! Don't let anyone ever push you down or call you worthless.  You are worth everything and more! So stay strong, hold on, and live long!  Most people don't hear this often. Your all loved, no matter what it feels like. So please, stay strong. If not for yourself then for me and everyone else who cares for you...░░░░░░░░░░░▄▀▄▀▀▀▀▄▀▄░░░░░░░░░░░░░░░░░░ ░░░░░░░░░░░█░░░░░░░░▀▄░░░░░░▄░░░░░░░░░░ ░░░░░░░░░░█░░▀░░▀░░░░░▀▄▄░░█░█░░░░░░░░░ ░░░░░░░░░░█░▄░█▀░▄░░░░░░░▀▀░░█░░░░░░░░░ ░░░░░░░░░░█░░▀▀▀▀░░░░░░░░░░░░█░░░░░░░░░ ░░░░░░░░░░█░░░░░░░░░░░░░░░░░░█░░░░░░░░░ ░░░░░░░░░░█░░░░░░░░░░░░░░░░░░█░░░░░░░░░ ░░░░░░░░░░░█░░▄▄░░▄▄▄▄░░▄▄░░█░░░░░░░░░░ ░░░░░░░░░░░█░▄▀█░▄▀░░█░▄▀█░▄▀░░░░░░░░░░ ░░░░░░░░░░░░▀░░░▀░░░░░▀░░░▀░░░░░░░░░░░░

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

1 the 1st term, 3 the 2nd term, 6 the 3rd term,etc.

note the following:

from the 1st term (1) to the 2nd term (3), we go up by 2,from the 2nd term (3) to the 3rd term (6), we go up by 3from the 3rd term (6) to the 4th term (10), we go up by 4, andfrom the 4th term (10) to the 5th term (15), we go up by 5.

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for