Question 995595
The slope-intercept equation of the line through the points (2.1,−5.3) and (−4.5,2.7) is 
y=mx+b
where m= (3-2.7)/(2.1--4.5) = 0.3/6.6 = 1/22
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Solve for "b":
2.7 = (1/22)(-4.5) + b
and b= 2.9
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y = (1/22)x + 2.9
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Cheers,
Stan H.