Match the Quadratic Function y = x²/4 + 2 to Its Graph

Question

One function

y=x24+2 y=\frac{x^2}{4}+2

to the corresponding graph:

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Video Solution

Solution Steps

00:00 Match the function to the appropriate graph
00:03 Notice that X's coefficient is squared and positive, so the function is smiling
00:09 We want to find the intersection point with the Y-axis
00:13 We'll substitute X=0 and solve to find the intersection point with Y-axis
00:19 This is the intersection point with the Y-axis
00:22 According to the function type and intersection point
00:25 We can conclude there's no intersection point with the X-axis
00:28 Let's draw the graph according to the function type and intersection point we found
00:31 And this is the solution to the question

Step-by-Step Solution

The function given is y=x24+2 y = \frac{x^2}{4} + 2 , which is a quadratic function with a vertex at (0,2) (0, 2) . The function is in the form y=a(xh)2+k y = a(x-h)^2 + k , where a=14 a = \frac{1}{4} , h=0 h = 0 , and k=2 k = 2 . This tells us that the parabola opens upwards with its vertex at (0,2) (0, 2) , and it's wider than the standard parabola y=x2 y = x^2 because 14 \frac{1}{4} is less than 1.

To find the correct graph, look for the one featuring a vertex at (0,2) (0, 2) with an upward opening, and wider spread due to the smaller coefficient. When comparing the graphs, the graph labeled as choice 1 clearly shows these characteristics, indicating the correct match for the function.

Therefore, the solution corresponds to the graph labeled as choice 1.

Answer

1