SOLUTION: Ralph wants to find the solution to a system of equations using y = x - 2 and y = x2 + 6x - 38. Joey says that Ralph can solve x2 + 5x - 36 = 0 to find the x-coordinates of the sol

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Ralph wants to find the solution to a system of equations using y = x - 2 and y = x2 + 6x - 38. Joey says that Ralph can solve x2 + 5x - 36 = 0 to find the x-coordinates of the sol      Log On


   



Question 888069: Ralph wants to find the solution to a system of equations using y = x - 2 and y = x2 + 6x - 38. Joey says that Ralph can solve x2 + 5x - 36 = 0 to find the x-coordinates of the solutions to his system. Explain and demonstrate why Joey is correct.
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Ralph can simple equate his two formulas for y and simplify into general form quadratic that it is. See if this compares well to Joey's suggested equation.


Note:
x%5E2+%2B+6x+-+38, and x%5E2+%2B+5x+-+36
the exponents.