Which equation represents a parabola with the focus at (0,-1) and the directrix y=1 ? (show work or explain correct answer) (1) x^2 = -8y
(2) x^2 = -4y
(3) x^2 = 8y
(4) x^2 = 4y

the answer is c just got it on ed

step-by-step explanation:

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.

sasaasasa

step-by-step explanation:

sasasdfubisdbjvkzc