The track team ran a 100-meter sprint. Their times are shown in the table. 9.8 10.4 12.1 9.4 10.1 10.0 11.1
10.9 10.9 9.3 12.0 9.6 9.9 12.5
Rounded to the nearest tenth of a second, what is the mean 100-meter sprint time of the team?

I don't know

Step-by-step explanation:

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?