Answer:
B. Negative
Step-by-step explanation:
So first, we want to locate the variable.
y (x/y) = (y/1) (x/y)
= (xy/y)
= x
The y/y cancels out and now we know we need to find the sign of x. Because x is to the left of 0, it's negative. Anything to the left decreases and anything to the left of 0 is (-).
Answer:
rigid, not rigid, rigid, rigid
Step-by-step explanation:
Answer:
The correlation between sales and advertising is positive.
Step-by-step explanation:
For every $35 spent on advertising, sales increase by $1
Is FALSE, since y = 500 + 35 x $35, sales increase more than $1
Even if no money is spent on advertising, the company realizes $35 of sales
Is FALSE, if no money is spent, the sales amount to $ 500 (when X = 0)
The coefficient of correlation between sales and advertising is 0.81
Is FALSE, since R² = 0.9. The coefficient of correlation = R = 0.94, not 0.81
Answer:
(y - 7)/(8 - 6) = 3
(y - 7)/2 = 3
y - 7 = 6
y = 13
Step-by-step explanation:
<span>In the case of linear equations with two unknowns, you would have two solutions: and "X" value and a "Y" value
-2x - 3y = 7
-0.4x - 0.6y = 1.4
In this case the solution is x=4 and y=-2
</span>