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Troyanec [42]
3 years ago
13

Identify the variable in the algebraic expression. 5x + 13

Mathematics
1 answer:
Damm [24]3 years ago
5 0

Answer:

x

Step-by-step explanation:

The definition of a variable is an unknown quantity, usually represented by a letter.

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Vertex:  (-5,-2); parabola opens up; 

General form of the equation for a vertical parabola opening up is:

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y+2 = a(x+5)^2.  We need to find the value of the coefficient a.

From the graph we see that y is 10 when x is approx. -1 3/4 (or -7/4).

subst. these values into y+2 = a(x+5)^2, we get:

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Solving for a:  a = 16/169 = 0.09, or approx 16/160, or 1/10.  Unfortunately, this is not close to any of the four answer choices.

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