Use the image to answer the question.

(5, 1), (0, 0)
Is this the correct graph of the equation y = 1/5 x?
A. Yes, It is the correct graph because the slope = 5/1
B. No, It is not the correct graph because the slope m = rise/run = 1/5
C. Yes, It is the correct graph because the ordered pair (0, 0) satisfies the equation and the slope m = rise/run = 1/5
D. No, It is not the correct graph because the ordered pair (1, 5) is not a point on the graph of y = 1/5 x

1 answer

To determine if the graph represents the equation \( y = \frac{1}{5} x \), we need to evaluate the given points and the slope.

  1. The equation \( y = \frac{1}{5} x \) implies that the slope \( m \) is \( \frac{1}{5} \). This means that for every 5 units you move in the x-direction, the y-value increases by 1 unit.

  2. The points given are (5, 1) and (0, 0).

    • For the point (5, 1): \[ y = \frac{1}{5} \times 5 = 1 \quad \text{(this point satisfies the equation)} \]
    • For the point (0, 0): \[ y = \frac{1}{5} \times 0 = 0 \quad \text{(this point also satisfies the equation)} \]
  3. The slope between the two points can be calculated as follows:

    • Rise: \( 1 - 0 = 1 \)
    • Run: \( 5 - 0 = 5 \)
    • Slope \( m = \frac{\text{rise}}{\text{run}} = \frac{1}{5} \).

Since both points satisfy the equation \( y = \frac{1}{5} x \) and the calculated slope matches the expected slope from the equation, we can analyze the answer options:

  • A states the slope is \( \frac{5}{1} \), which is incorrect.
  • B states the slope is \( \frac{1}{5} \), which is correct, but it claims it does not represent the correct graph.
  • C correctly states that both points satisfy the equation and that the slope is \( \frac{1}{5} \).
  • D incorrectly states that (1, 5) is not a point on the graph, which is irrelevant to determining whether the graph is correct.

Given all of this, the best answer is:

C. Yes, It is the correct graph because the ordered pair (0, 0) satisfies the equation and the slope m = rise/run = 1/5.

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