Solve the quadratic equation x^2-2x-8=0

i have tried many ways for this one but it ends up being a ridiculous answer.

Find and classify the slope of the line through each pair of points (2,,-16)

Drag the tiles to the table. the tiles can be used more than once. nd g(x) = 2x + 5 model a similar situation. find the values of f(x) and g(x) let's say that the functions f(x for the given values of x. fix)=5(4) * g(x) = 2x+5

How do you determine whether a relationship represented as as graph is linear or nonlinear