For the given equation, find the values of a, b, and c, determine the direction in which the parabola opens, and determine the y-intercept. Decide which table best illustrates these values for the equation: y = 7 x squared table a a b c up or down y-intercept 0 0 7 up (0, 7) table b a b c up or down y-intercept 7 0 0 up (0, 0) table c a b c up or down y-intercept 7 0 0 up (0, 7) table d a b c up or down y-intercept 0 7 0 up (0, 0) a. Table a c. Table c b. Table b d. Table d.