Write the equation of a parabola with its vertex at the origin and directrix at y = 1
a. x^2=y
b. y^2=x
c. x^2=-4y
d. y^2=-4x

Could answer every question with steps

The coordinate grid shows points a through k. which points are solutions to the system of inequalities listed below? 2x+ ys 10 2x 4y < 8 oa c, d, k o e, f. g, j oa, c, d, h, k oe, f. g, h, j

Which of the following is true for the relation f(x)=2x^2+1