3. write the equation of a parabola with focus (-2,4) and directrix y=2 . show your work, including a sketch.

Equation of parabola with focus (f₁, f₂) and directrix ax+by+c=0 is:



So we have:

focus: (-2,4)  ⇒  f₁ = -2, f₂ = 4
directrix: y = 2  ⇒  y - 2 = 0  ⇒  0x + 1y - 2 = 0  ⇒  a = 0, b = 1, c = -2

and equation:



I don't know which equation of a parabola you know, so i used general one (the one that always works).

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

If jon had $4.00 then takes away $2.25, then he should have $1.75 left. $4.00 - $2.25 = $1.75 hope this ; )