The equation is put in slope intercept form which is y=mx+b
The slope is m and in this case it is -1/2.
To find the y intercept substitute in 0
for x then solve.

Answer:
<h2><em><u>
3.24</u></em> </h2>
<em><u>= yes, because the sqrt of 3.24 is 1.8</u></em>
<h2><em><u>
20.25</u></em></h2><h3>= yes, because the sqrt of 20.25 is 4.5</h3>