The data is linear as the x and y are both increasing at a set amount.
X increases by 2 each time Y increases by 4.
Our slope would be 2x because every time x goes up 1 y goes up 2.
With that knowledge I can figure that if you increased the point -1,17 by the slope to get 0,21 that would be the y intercept.
Thus the equation should be y=2x+21
7+4=11 * -9= -99 hope this helped
To calculate mean: Just add up all the numbers, then divide by how many numbers there are.345 + 673 + 728 +775 + 822 +827 +839 + 951 = 5960/8 = 745
633 + 673 + 728 +775 + 822 +827 +839 + 951 = 6248/8 = 781781- 745 = 35 It increases by 35To find the Median, place the numbers in value order and find the middle. BUT, with an even amount of numbers things are slightly different. In that case we find the middle pair of numbers, and then find the value that is half way between them. This is easily done by adding them together and dividing by two. 345 673 728 775 822 827 839 951 The median = 822-775 /2
The median =23.5After the change633 673 728 775 822 827 839 951 The median = 822-775 /2
The median =23.5The median stays the same.
