Question

A student found the slope of a line that passes through the points (3, 15) and (5, 9) to be . What mistake did he make?

Answer 1

A reciprocal, or multiplicative inverse, is simply one of a pair of numbers that, when multiplied together, equal 1. If you can reduce the number to a fraction, finding the reciprocal is simply a matter of transposing the numerator and the denominator so the answer is he used the recpriocal of the slope.

Answer 2

I hope this helps you



slope=y2-y1/x2-x1


slope=9-15/5-3


slope= -6/2


slope = -3