Question

What is the y-coordinate of the solution of the system of equations? {y=3x−262x−y=19 Enter your answer in the box.

Answer 1

Answer:

y = -5

Step-by-step explanation:

$\left\{\begin{array}{ccc}y=3x-26&(1)\\2x-y=19&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\2x-(3x-26)=19\\2x-3x+26=19\qquad\text{subtract 26 from both sides}\\-x=-7\qquad\text{change the signs}\\x=7\\\\\text{Put the value of x to (1):}\\\\y=3(7)-26=21-26=-5$