Determine if the triangle on the coordinate plane is a right triangle by using the converse of the Pythagorean theorem.

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it

there is no chart here

1. no. 3 maps to both 3 and -2

2. yes. all x-values map to exactly 1 val.

3. no. 5 maps to both -2 and 9.

4. yes. all x-values map to exactly 1 value

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