<span><span>Step One:<span> Identify two points on the line.</span></span><span>Step Two:<span> Select one to be (x</span>1<span>, y</span>1<span>) and the other to be (x</span>2<span>, y</span>2).</span><span>Step Three:<span> Use the slope equation to calculate slope. hope this helps </span></span></span>
Answer:
I dont think so I would look at it as how did they get the -2
You would write it 2=10(20+2)
You substitute the y from the second eqaution to the y in the first equation
