1. (draw a trend line on the graph).
number of hours of exercise (y) vs. number
of months machine was owned (x)
yes / no
2. (a) is there a correlation between the variables?
positive / negative
(b)
the correlation is
strong / weak
the correlation is
(c)
_goes up,
(d) as _
increases / decreases.
(e) main idea (summary) of this graph: in other words,

answer: it's d

step-by-step explanation:

answer: rolling a number cube and flipping a coin.

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0