straight line graph reminder

Post on 03-Dec-2014

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DESCRIPTION

Just a very quick reminder about gradient and intercept

TRANSCRIPT

Graphing…linear function

Data

Graphing…linear function

Data Plot graph

Graphing…linear function

Data Plot graphDraw lineof best fit

Graphing…linear function

Data Plot graphDraw lineof best fit

Find gradientand intercept

Graphing…linear function

Data Plot graphDraw lineof best fit

Find gradientand intercept

Write formulafor line

Straight line graphs

Linear Function

-50

-40

-30

-20

-10

0

10

20

30

40

50

0 10 20 30 40 50 60 70 80 90 100

X

Y

Straight line graphs

Linear Function

-50

-40

-30

-20

-10

0

10

20

30

40

50

0 10 20 30 40 50 60 70 80 90 100

X

Y

Intercept is where line crosses Y axis

Straight line graphs

Linear Function

-50

-40

-30

-20

-10

0

10

20

30

40

50

0 10 20 30 40 50 60 70 80 90 100

X

Y

Intercept is where line crosses Y axis

Y-step

X-step

Straight line graphs

Linear Function

-50

-40

-30

-20

-10

0

10

20

30

40

50

0 10 20 30 40 50 60 70 80 90 100

X

Y

Intercept is where line crosses Y axis

Y-step

X-step

stepx

stepyGradient

Straight line graphs

Linear Function

-50

-40

-30

-20

-10

0

10

20

30

40

50

0 10 20 30 40 50 60 70 80 90 100

X

Y

Intercept is where line crosses Y axis

Y-step

X-step

stepx

stepyGradient

Y = grad x X + Intercept

Straight line graphs

Linear Function

-50

-40

-30

-20

-10

0

10

20

30

40

50

0 10 20 30 40 50 60 70 80 90 100

X

Y

Intercept is where line crosses Y axis

Y-step

X-step

stepx

stepyGradient

Y = grad x X + Intercept

Y = mx + c

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