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Linear Relationships

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Define what a linear relationship is?

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State the general equation of a straight line.

y = mx + b

How is the gradient calculated?

RISE/RUN

What does it mean when the gradient is negative?

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What does it mean when the gradient is positive?

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What does "b" represent in the equation of a straight line?

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Give a practical example of a linear relationship

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Calculate the gradient of the line below.

m=7/9

Calculate the gradient of the following line.

Gradient= 3/2

What is Mr. Russo's nationality?

Italian

What car does Mr. Russo drive and what colour?

Holden Cruze- Black

True or False. Trinity Catholic College is Mr. Russo's first school.

False

Calculate the gradient and y-intercept via the table of values and find the equation of the line.

y= -2x-1

What is the general formula for "Direct Variation"?

y=kx

What does "k" stand for in the formula for Direct Variation?

k= constant of variation

Bryan's Income ( I ), directly varies with the amount of hours he works. Bryan's income is $625 when he works 25 hours. Hence, find the constant of variation.

k= 25