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Mathematics 19 Online
OpenStudy (themathasker):

Complete the function table and write the function rule HELP D:

OpenStudy (themathasker):

OpenStudy (anonymous):

@AmyRoseRules @AliceCullen

OpenStudy (aripotta):

do you see any pattern here? what could we do to 32 to get 20?

OpenStudy (themathasker):

1.6 x 20 would be 32

OpenStudy (aripotta):

but if we do 2 x 1.6, do we get 14?

OpenStudy (aripotta):

the function rule is much simpler than you think

OpenStudy (aripotta):

what else can we do to 32 to get 20?

OpenStudy (themathasker):

Subtract it by 12

OpenStudy (aripotta):

yes! 32 - 12 = 20. so the function rule would be y = x - 12. is it true for 14 and 2? does 14 - 12 = 2? and -2 and -14? does -2 - 12 = -14?

OpenStudy (aripotta):

it is true for all the ordered pairs already in the table. so y = x - 12 is our rule. you can now use the rule to fill in the table

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