Use the quadratic formula to solve x² + 7x + 8 = 0. What are the solutions to the equation?

Round irrational solutions to the nearest tenth.

x=−7 and x=−1

x=−5.6 and x=−1.4

x=−8 and x = 1

x=−6.9and x=−0.15

40 minutes

step-by-step explanation:

add the time and multiply by 2

1,8,15,22,29,36,43,50

step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: