Answer:
Step-by-step explanation:
Domain is all X values, and range is the Y values.
Answer:
x<7
Step-by-step explanation:
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We can use triangle inequality to prove it. What this rule is, it's basically if u add up 2 sides of the triangle, the length must be longer than the third side, check all 3 sides, and if all sides matches with the rule, a triangle is possible.