If using the method of completing the square to solve the quadratic equation x^2−9x−8=0which number would have to be added to "complete the square"?

b. 2

step-by-step explanation:

the slope of a line =δy/δx

δy= y₂-y₁

δx= x₂-x₁

therefore, using the points (-2,-3)   and (3,7) we can calculate gradient as follows:

m=(7--3)/(3--2) (a number minus a negative number the sign changes to a plus)

m=(7+10)/(3+2)

=10/5

=2

fjfjfhdhdhdhjjdjdjdjdjjd thats the answers

step-by-step explanation:

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation:

80

step-by-step explanation: