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Step-by-step explanation:
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I'm not sure if its correct but I say its the third scatterplot.
Because on number two there is a right angle and a part of it is 66 you subtract 66 from 90 and then divide that by 31 and subtract 7. Hope that helped a little
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This is a linear equation, there's nothing to simplify.
The slope in this equation is 1.25
The y-intercept of this equation is 10