So, to be a linear relationship....the difference between the two consecutive "x" values and the difference between the two consecutive "y" values must be same.
In this case,
if we look at the x values , 4 - 3 = 1
3 - 2 = 1
2 - 1 = 1
they are all the same,
<u>BUT,</u><u><em /></u> if we look at the y values, 11.5 - 8.5 = 3
8.5 - 6.5 = 2
6.5 - 4.5 = 2
Here, the differences between the "y" values are all not the same.
<em><u>SO, the relationship is not linear.</u></em>
Answer:

Step-by-step explanation:

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<em>divi</em><em>ding</em><em> </em><em>th</em><em>rough</em><em> </em><em>by</em><em> </em><em>3</em>
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Y+2=3(x-4)
y+2=3x-12
-2 -2
y=3x-14
slope-intercept form: y+2=3(x-4)