Question

Brenda needs to solve the system of linear equations below for her homework assignment. y = 9x – 70 y = 2x – 32 Which is a reasonable estimate of the solution to this system of linear equations?

Answer 1

Equations are :--- y = 9x – 70 and y = 2x – 32

Substituting the value of y, we get

`9x - 70 = 2x - 32 \\ 7x = 38 \\ x = (38)/(7) \\ \boxed{x = 5.43} \\ y = 9x - 70 \\ y = 9( (38)/(7) ) - 70 \\ \boxed{ y = - 21.14}`

Answer 2

Explanation:

We have y = 9x - 70 and y = 2x - 32.

=> 9x - 70 = 2x - 32

=> 7x = 38

=> x = 38/7 which is around 5.43.