Odgovor:
Pojasnilo:
Pri x = 0,
Podobno, ko je y = 0,
Kakšni so prestopi za y = 2x ^ 2-10x-1?
Y = -1 x_1 = 0,098 x_2 = 5,098 y = 2x ^ 2-10x-1 "za x =" 0 "" rArry = -1 "za y =" 0 2x ^ 2-10x-1 = 0 Delta = sqrt ( 100 + 4 * 2 * 1) "" Delta = sqrt (108) "" Delta = 10,39 x_1 = (10-10,39) / 4 x_1 = (0,39) / 4 x_1 = 0,098 x_2 = (10 +10,39) / 4 x_2 = (20,39) / 4 x_2 = 5,098
Kakšni so prestopi za y = 2x + 3?
"x-intercept" = -3 / 2, "y-intercept" = 3> ", da bi našli presnetke, kjer je graf prečka osi x in y" "" naj x = 0, v enačbi za y-prestreže "•" naj y = 0, v enačbi za x-intercept "x = 0rArry = 0 + 3 = 3larrcolor (rdeča)" y-intercept "y = 0rArr2x + 3 = 0rArrx = -3 / 2larrcolor (rdeča) ) graf "x-intercept" {(y-2x-3) ((x-0) ^ 2 + (y-3) ^ 2-0.04) ((x + 3/2) ^ 2 + (y-0) ^ 2-0.04) = 0 [-10, 10, -5, 5]}
Kakšni so prestopi za y = 2x + 6?
X-intercept = -2 y-intercept = 6 Za odseke črte: x-intercept je, ko je y = 0 in y-prestrezanje, ko je x = 0. x-intercept Ko je y = 0 y = 2x + 6 0 = 2x + 6 -2x = 6 x = -6 / 3 x = -2 -----> To je x-prestrezanje! y-prestrezanje Pri x = 0 y = 2x + 6 y = 2 (0) + 6 y = 0 + 6 y = 6 ------> To je y-prestrezanje!