It is rational, because it can be written as a fraction.
Hello!
<h2>
WORK SHOWN BELOW</h2><h2>
</h2><h2>8x - 2y = 48, y =4</h2><h2 /><h2>8x - 2(4) = 48</h2><h2>8x - 8 = 48</h2><h2>8x = 48+8</h2><h2>8x = 56</h2><h2>x = 56/8 = 7</h2><h2 /><h2>x = 7</h2>