To find the equation of a line using two coordinate points, use the slope intercept formula, (y2-y1)/(x2-x1). Using this formula, plug in your values from the two coordinates (-5, -5) and (1, -3). This would look like this:
(-3-(-5))/(1-(-5))
When simplified, you should get 2/6 or 1/3 as your slope or m value. Now that you have your slope, now use your slope intercept equation y=mx+b and plug in your known values. Since you know the m value is 1/3 and you can use one of your set of points to plug into the x and y values, you can plug in these values and solve for b (the coordinate you use doesn't matter but I'm just using the (1,-3)). This would look like this:
-3=1/3(1)+b
When you simplify, you should get -3=1/3+b and when you subtract both sides by 1/3, you should get b=-10/3.
Now that you have your m and b values, you can conclude that your equation for the line would be y=1/3x-10/3
Answer:
.4 is the answer
Step-by-step explanation:
2÷5= .4
Answer:
The 2003 scores have a higher coefficient of variation, so they are more dispersed
Step-by-step explanation:
We have to find the coefficient of variation(CV) for both these tests.
In which 
is the mean and 
is the standard deviation.
Whoever has the higher CV has the higher variation, that is, is more dispersed.
2003
2004
The 2003 scores have a higher coefficient of variation, so they are more dispersed.
