Question

HELP PLEASE-


Jack plots points showing equivalent ratios on the coordinate plane below.



Which ordered pair, if plotted above, would represent a ratio that is equivalent to those shown?
(1, 9)
(3, 9)
(4, 18)
(5, 18)

Answer 1

Answer:  Choice C

(4, 18)

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Explanation:

One point shown on the graph is (2,9)

If we double each x and y coordinate, then

• 2*2 = 4
• 9*2 = 18

We go from (2,9) to (4,18)

Plotting this point on the graph will be on the same line as the other points.

Or you could note that y/x = 9/2 = 18/4 = 4.5