If you mean parallel to another line, you have to find the the equation of that line. Lets just say it was y= 7x-2. To find the slope of a line parallel to that, then you look at the slope of that line, which in this case would be 7. The slope of a line parallel would have to be the same. So, I can't give you a direct answer because I can't see the graph but that is how you get the answer.
The answer is 14 because
4 divided by 2 is 2 multipled by 5 = 10 that exponet on the base of 2 equals four and 4+10=14
A). Is correct you can thank me later ;)
15.66 is what I got in my calculator if you turn %65 into .65
To put it in slope intercept form, you want to solve for y.
5y = -6x + 50
y = -6/5x + 10
So, your slope is -6/5 (or -1.2) and your y-intercept is +10.
