PLEASSE ANSWER! (2 questions)

Question

A number, y, is equal to twice the sum of a smaller number and 3. The larger number is also equal to 5 more than 3 times the smaller number. Which equations represent the situation? Which of these is a solution to the system of equations 3x – y = 15 and 6x – 2y = 30? select all that apply. (6, 3) (8, 9) (7, 6)?

Answer 1

Lilly, don't overthink it.

 

The sum of x and 3 is x + 3. Twice that is 2(x + 3) = 2x + 6, so y = 2x + 6.

 

y = 3x + 5 is 5 more than 3 times the smaller number.

 

For the 2nd part, plug in the x-value and y-values given. Which pair makes both equations true?