Is (7,-2) a solution to this system of equations? 8x-20y=-4 18x+y=-12 yes no

To determine if $(7,-2)$ is a solution to the system of equations, we need to substitute the values of $x$ and $y$ into both equations and check if they hold true.<br /><br />Let's start with the first equation:<br />\[8x - 20y = -4\]<br /><br />Substituting $x = 7$ and $y = -2$:<br />\[8(7) - 20(-2) = -4\]<br />\[56 + 40 = -4\]<br />\[96 \neq -4\]<br /><br />Since the left side does not equal the right side, $(7,-2)$ is not a solution to the first equation. Therefore, we do not need to check the second equation.<br /><br />The answer is: no