Please guys help of opt math class 9 trigonometry very hard my head paining help​

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Use the distance formula to find the distance between (-3,5) and (3,1)

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?