Finding the equation of graphs and nth term in a sequence Flashcards

1
Q

what is y=mx+c

A

The equation to find the equation of a line graph

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2
Q

what does m mean in y=mx+c

A

m means the gradient, or the rise over run

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3
Q

what does c mean in y=mx+c

A

c means the y-intercept, or the coordinate that hits the y-axis

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4
Q

how do you find the nth term in a sequence?

A

you calculate the difference between two numbers and then figure out the previous number

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5
Q

find the nth term of this sequence: 2, 5, 8, 11…

A

3n - 1

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6
Q

find the nth term of this sequence: 25, 18, 11, 4

A

-7n + 32

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7
Q

True or false: If a sequence goes down, the nth is negative

A

True (optional: and if the sequence goes up, the nth term is positive)

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