Question

is (5, 2) a solution to this system of equations?
5x - 4y = -20
7x - 10y = 15
yes
no

Explanation:

Step1: Substitute x = 5 and y = 2 into first - equation

Substitute into $5x−4y$:
$5\times5−4\times2=25 - 8=17$
Since $17
eq - 20$, the point $(5,2)$ does not satisfy the first equation $5x - 4y=-20$. We don't need to check the second equation as a point must satisfy all equations in a system to be a solution.

Answer:

no