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AVprozaik [17]
3 years ago
11

Can someone explain to me how to find if an Algebra Expression is Equivalent to another

Mathematics
2 answers:
Anna [14]3 years ago
6 0
<span>You simply set them to equal each other and solve!
y=2x+5
y=4x-2
Due to logical assumptions, we can say that 2x+5=4x-8
+8
2x+13=4x
-2x 13=2x
 /2 x=13/2,, or 6.5</span>
sashaice [31]3 years ago
4 0
First of all, you need to simplify the expressions in order to know whether they are equal. Then, it all depends on the expression, after you simplify an expression, it will seem much easier to determine that.  <span />
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This is the graph of f(x). What is the value of f(3)?
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Answer:

The value of f(3) is 8 ⇒ D

Step-by-step explanation:

  • In the function f(x) = y, y is the corresponding value of x
  • Ex: If f(a) = b, then the value of y = b at x = a

Let us solve the question

∵ The given figure represents the function f(x)

→ That means every point on the graph represents f(x) = y

∴ f(x) = y

∵ We need to find f(3)

→ That means we need the value of y at x = 3

∴ x = 3

Look at the graph and find the y-coordinate of the point that lies on the curve and has x-coordinate = 3

→ Each small square on the x-axis represents 1 unit, and on the y-axis

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∵ There is a point on the graph that has x-coordinate = 3

∵ The y-coordinate of this point is 8

∴ The point (3, 8) lies on the graph of f(x)

∴ x = 3 and y = 8

∴ f(3) = 8

∴ The value of f(3) is 8

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vfiekz [6]

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Step-by-step explanation:

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