Match the Quadratic Function y=(x+3)² with its Corresponding Graph

Quadratic Functions with Vertex Form Transformations

One function

y=(x+3)2 y=(x+3)^2

for the corresponding chart

-3-3-3333333-3-3-31234

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Match the correct graph to the function
00:03 The coefficient of X squared is positive, meaning a smiling parabola
00:07 The term P equals (-3)
00:13 The term K equals (0)
00:18 X-axis intersection points according to the terms
00:23 We'll draw the function according to intersection points and parabola type
00:32 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

One function

y=(x+3)2 y=(x+3)^2

for the corresponding chart

-3-3-3333333-3-3-31234

2

Step-by-step solution

To solve this problem, we'll proceed as follows:

  • Step 1: Identify the vertex of the function y=(x+3)2 y=(x+3)^2 .
  • Step 2: Determine the direction the parabola opens.
  • Step 3: Compare the features of each choice's graph to the characteristics identified.

Let's analyze the function y=(x+3)2 y=(x+3)^2 :

Step 1: The vertex of the function y=(x+3)2 y=(x+3)^2 is at (p,0) (p, 0) . Since p=3 p = -3 , the vertex is at the point (3,0) (-3, 0) .

Step 2: The function is of the form y=(x+3)2 y=(x+3)^2 , which opens upwards because the coefficient of (x+3)2 (x+3)^2 is positive.

Step 3: By comparing graphs, we select the one where the parabola has a vertex at (3,0) (-3, 0) and opens upwards. Looking at the provided choices, choice 4 has a graph with a vertex at (3,0) (-3, 0) and is consistent with the function opening upwards.

Therefore, the correct graph corresponding to the function y=(x+3)2 y=(x+3)^2 is choice 4.

3

Final Answer

4

Key Points to Remember

Essential concepts to master this topic
  • Vertex Form: y=(xh)2+k y = (x - h)^2 + k has vertex at (h,k) (h, k)
  • Horizontal Shift: y=(x+3)2 y = (x + 3)^2 moves vertex 3 units left to (3,0) (-3, 0)
  • Check Graph: Find vertex at (3,0) (-3, 0) and confirm parabola opens upward ✓

Common Mistakes

Avoid these frequent errors
  • Confusing the sign in vertex form
    Don't think y=(x+3)2 y = (x + 3)^2 has vertex at (3,0) (3, 0) = wrong graph! The plus sign means the vertex moves LEFT, not right. Always remember y=(xh)2 y = (x - h)^2 where h is the opposite of what's inside the parentheses.

Practice Quiz

Test your knowledge with interactive questions

Find the intersection of the function

\( y=(x+4)^2 \)

With the Y

FAQ

Everything you need to know about this question

Why does y=(x+3)2 y = (x + 3)^2 have its vertex at (3,0) (-3, 0) instead of (3,0) (3, 0) ?

+

The vertex form is y=(xh)2+k y = (x - h)^2 + k . When you see (x+3)2 (x + 3)^2 , rewrite it as (x(3))2 (x - (-3))^2 . So h = -3, making the vertex at (3,0) (-3, 0) !

How do I know which direction the parabola opens?

+

Look at the coefficient in front of the squared term. Since y=(x+3)2 y = (x + 3)^2 has a positive coefficient (it's +1), the parabola opens upward. Negative coefficients open downward.

What if there's no number added or subtracted outside the parentheses?

+

Then k = 0! Your function y=(x+3)2 y = (x + 3)^2 is the same as y=(x+3)2+0 y = (x + 3)^2 + 0 , so the vertex has a y-coordinate of 0.

How can I double-check I picked the right graph?

+

Pick a test point! Try x=2 x = -2 : y=(2+3)2=12=1 y = (-2 + 3)^2 = 1^2 = 1 . The correct graph should pass through (2,1) (-2, 1) .

What's the difference between this and y=x2+3 y = x^2 + 3 ?

+

y=(x+3)2 y = (x + 3)^2 shifts the parabola horizontally (left 3 units), while y=x2+3 y = x^2 + 3 shifts it vertically (up 3 units). Very different transformations!

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