Mia's work to find the slope of a trend line through the points (3, 10) and (35, 91) is shown below. Mia's Work Step 1 StartFraction 3 minus 35 Over 10 minus 91 EndFraction Step 2 StartFraction negative 32 Over negative 81 EndFraction Step 3 StartFraction 32 Over 81 EndFraction What was the first error that Mia made?

What she did was to find the change in x to change in y i.e she used the wrong expression m = x2-x1/y2-y1

Step-by-step explanation:

Slope of a line m is xpressed using the formula;

m = y2-y1/x2-x1

Given the coordinate (3, 10) and (35, 91)

x1 = 3, y1 = 10, x2 = 35 and y2 = 91

Substitute

m = 91-10/35-3

m = 81/32

Hence the slope of the line is 81/32

Mia made an error in the first step. What she did was to find the change in x to change in y i.e she used the wrong expression m = x2-x1/y2-y1

43

step-by-step explanation:

eve and marks ratios are equivalent

step-by-step explanation: