SOLUTION: The gradient of (2, -1) and (x, 0) is –5. Find the value of x.

Algebra ->  Statistics  -> Linear-regression -> SOLUTION: The gradient of (2, -1) and (x, 0) is –5. Find the value of x.      Log On


   

Question 976279: The gradient of (2, -1) and (x, 0) is –5. Find the value of x.
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
hi there,
Gradient = y(2) - y(1)/x(2) - x(1)
-5 = 0 - (-1)/ x - 2
-5 = 1/x-2
Cross multiply
-5(x - 2) = 1
-5x + 10 = 1
-5x = 1 - 10
-5x = -9
x = 9/5
Hope this helps:-)