Jellieroll2000 Jellieroll2000

20-11-2014
Mathematics

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What is the slope-intercept form of the function described by this table?

x 1 2 3 4
y 2 7 12 17

y = x +

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ollieboyne ollieboyne

20-11-2014

For every change of x by 1, y increases by 5.

So the gradient of the line is 5.

To find the y-intercept:

y = mx + c
2 = 5(1) + c
2 = 5 + c
c = -3

So the equation of the line is y = 5x - 3

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