A quadrilateral has vertices at (1, 4),
(7, 3), (3, −5), and (8, −4). The
quadrilateral is dilated by a scale factor of
3.5 with the origin as its center. What are
the coordinates of the vertices of the
image of the quadrilateral?

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

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step-by-step explanation:

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.