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3 Question
Drag each equation to the correct location on the table.
Which equations have one solution and which have infinitely many solutions?
One Solution
Infinitely Many Solutions
28 - 4 = 28 - 18+ 4
-2.1b +593 = b - 3.1b + 5.3
w+40 - w
5.7c - 1.5 +3.2c = 7.8c - 1.5+ 1.1c
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3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

351.23

step-by-step explanation:

sorry i just need to anwers this to get points

step-by-step explanation: