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Complete the function for this graph.
y = x + 2] + [?]

Complete the function for this graph. y = x + 2] + [?]-example-1
User Alexander Sagen
by
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1 Answer

15 votes
15 votes

Answer:

y =|x + 2| + 3

Explanation:

If you look at the graph, when x = -2, y = 3

So we have

y = |x + 2| + ?

3 = |-2 + 2| + ?

3 = ?

So the graph equation is

y =|x + 2| + 3

We can verify this by taking 2 other points on the graph and checking if our equation is consistent

At x = 0, we see that y = 5

Does this fit with our equation?

Substituting for x

==> y = |0 + 2| + 3 = 2 + 3 = 5

So our equation verifies with the data on the graph

Take another point on the graph with a negative x value
Let's check the point x = -5. From the graph we see that y = 6

Plug in x value into our function and see what value of y we get
y = |-5 + 2| + 3

y = |-3| + 3

Absolute value is always positive so |-3| = 3
y = 3 + 3 = 6

So it is consistent for point (-5, 6)


User The Sharp Ninja
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2.1k points