Pāngarau

tikanga whakauru

substitution method

tūingoa

WHAKAMĀRAMA

Ko te whakakapi i tētahi taurangi o tētahi kīanga, o tētahi whārite rānei ki tētahi tau, ki tētahi atu kīanga rānei. Hei tauira, ina whakaurua te 5 hei whakakapi i te ‘a’ i te kīanga 3a, ka hua ko te 15 (3 x 5).

Replacing a variable in an expression or equation with a number or with another expression. For example, if 5 is substituted for ‘a’ in the expression 3a, 15 is the result.

Tauira KŌrero

Whakamahia te tikanga whakauru hei whakaoti i ngā whārite.

Ko te tikanga whakauru tētahi huarahi hei whakaoti whārite, hei tuhi kauwhata hoki.

Whakamāramatia mai te tikanga whakauru hei tuhi kauwhata rārangi.

WhakamĀrama Āpitihanga

Anei tētahi whārite: y = 2x + 1

Mā te tikanga whakauru e kitea ai ngā takirua raupapa mō tēnei whārite, hei tā anō i te kauwhata e hāngai ana.

Mēnā x = 0, y = 2 x 0 + 1 = 1. Nō reira, ko te (0,1) tētahi o ngā takirua raupapa hei whakaoti i tēnei whārite:

Mēnā x = 1, y = 2 x 1 + 1 = 3 (1,3)
Mēnā x = 2, y = 2 x 2 + 1 = 5 (2,5)
Mēnā x = 3, y = 2 x 1 + 1 = 7 (3,7)

Nō reira, koinei te huinga takirua raupapa e tika ana: {(0,1) (1,3) (2,5) (3,7) (4,9) (5,11) ...}

Ka taea ēnei takirua raupapa te whakaatu ki te kauwhata:

Tauira KŌrero

Whakamahia te tikanga whakauru hei whakaoti i ngā whārite.

Ko te tikanga whakauru tētahi huarahi hei whakaoti whārite, hei tuhi kauwhata hoki.

Whakamāramatia mai te tikanga whakauru hei tuhi kauwhata rārangi.

WhakamĀrama Āpitihanga