<p>Hi guys,</p>
<p>I don't remember to solve similar questions. </p>
<p>question:</p>
<p><a href="http://b1210.hizliresim.com/12/r/f6g0c.jpg%5B/url%5D">http://b1210.hizliresim.com/12/r/f6g0c.jpg</a></p>
<p>When x = 0, you get y = c. So, wherever the line crosses the y axis is your point. In this question, it’s between -40 and -80, so the answer is -72.</p>
<p>Generally speaking, all you have to do is plug in known values of x and y.
an easy option is y=0 and x=-6.</p>
<p>You then have an easy equation with only one variable - c - which is what you are looking for.</p>
<p>write it all in the calculator and the answer is, as failure622 said, -72.</p>
<p>good luck</p>
<p>^It’s not much of a calculator question. Let x = 0, then y = c → c = -72. Solved in 15 seconds.</p>
<p>yeah but if one of the answers were -74 then you’d have to do some math…
I was suggesting a more general way to approach this kind of questions.</p>
<p>I guess…but they wouldn’t ask this problem with -72 and -74 as answers. If they did, you would have to assume that -6 is a root (as opposed to x = -5.999), in which the problem would have to state that, otherwise it’s too unclear. Then you just plug in x = -6.</p>