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Volgvan
3 years ago
14

What does ± indicate when its used like 2±1?​

Mathematics
2 answers:
boyakko [2]3 years ago
6 0

Answer:

it is in quadratic equation meaning you use Plus or minus

stira [4]3 years ago
4 0

Answer:

I is both the plus and minus sign so and 2+1 and subtract 2-1 both answers are the answer

Step-by-step explanation:

The plus–minus sign, ±, is a mathematical symbol with multiple meanings. In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction.

The sign may also represent an inclusive range of values that a reading might have.

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Two parallel lines

Step-by-step explanation:

the slopes are the same: slope = 3

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ordered pair             (-1, 2)                                         ( -1, -5)

Locate the ordered pairs and draw the graph on the lines.  

you will graph two parallel lines        

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