If lines joined each given point on the graph to the origin, which points would be on lines that represent a unit rate less than the one represented on the table? X Y
13 21
26 42
39 63

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

answer: (1,3) (3,-1) (5,-5) ?

step-by-step explanation:

is there a graph

step-by-step explanation:

do it yourself this is easy

step-by-step explanation: