Which expression can be simplified to find the slope of the trend line in the scatterplot?
A
the fraction with numerator 8 minus 4 and denominator 35 minus 21B
the fraction with numerator 35 minus 21 and denominator 8 minus 4C
the fraction with numerator 21 minus 35 and denominator 8 minus 4D
the fraction with numerator 8 minus 4 and denominator 21 minus 35