You use an independent samples t statistic when a. The IV defines two independent samples and the DV is measured on an interval/ratio scale
b. The IV defines two matched samples and the DV is measured on an interval/ratio scale.
c. The IV defines one sample, the DV is measured on an interval/ratio scale, and the DV is measured twice on that same sample.
d. The IV defines one sample and the DV is measured on an interval/ratio scale and you do not know the population standard deviation.
e. The IV defines one sample and the DV is measured on an interval/ratio scale and you do know the population standard deviation

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step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

a) 0,0; 1,1; and 2,2

step-by-step explanation:

these have the exact same coordinates, thus they are the correct function.