-2x2 - 3y2 + 9xy 5x2 + 3x - 9xy x2-3x + y​

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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step-by-step explanation:

the one below it is a function

where is the graph? need more info