3 years ago

Which relation is a function?

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

4 0

Answer:

Step-by-step explanation:

if you don't have from same x different outcomes is a function

think that x is a day you count votes, you can not get for the same day different y number of votes ( something is fishy then)

A. not a function because (6, -3) and (6, 3)

B. not a function because (4,7) and (4,2)

C. is a function

D. not a function because (2, -1) (2,1) (2,3)

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Find the distance between the two points on the graph.

puteri [66]

let's take a peek at the graph, it has the points of (-5 , 3) and (-2 , -3), so then

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{-5}~,~\stackrel{y_1}{3})\qquad (\stackrel{x_2}{-2}~,~\stackrel{y_2}{-3})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{[-2-(-5)]^2+[-3-3]^2}\implies d=\sqrt{(-2+5)^2+(-3-3)^2} \\\\\\ d=\sqrt{3^2+(-6)^2}\implies d=\sqrt{45}\implies d\approx 6.71$