Which statements are true for the equation x2 = −4y? Check all that apply. The axis of symmetry is x = 0.
The focus is at (0, –1).
The parabola opens up.
The parabola opens right.
The value of p = −1.
The equation for the directrix is y = 0.

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33