Graphing Equations Quick Check

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Question
Use the image to answer the question.
A coordinate plane shows the x-axis ranging from negative 9 to 9 in increments of 1 and the y-axis ranging from 11 to negative 11 in increments of 1. A line with arrows at both ends joins two plotted points.
The coordinates of the plotted points are as follows: left parenthesis 0 comma 3 right parenthesis, and left parenthesis 3 comma 2 right parenthesis.
Is this the correct graph of y=−1/3x+4
?(1 point)
Responses

Yes, it is the correct graph because this graph has a y
-intercept of (0,3)
.
Yes, it is the correct graph because this graph has a y -intercept of left parenthesis 0 comma 3 right parenthesis .

No, it is not the correct graph because this graph has a positive slope.
No, it is not the correct graph because this graph has a positive slope.

No, it is not the correct graph because this graph used (0,3)
as the y
-intercept.
No, it is not the correct graph because this graph used left parenthesis 0 comma 3 right parenthesis as the y -intercept.

Yes, it is the correct graph because this graph has a y
-intercept of (0,4)
.
Yes, it is the correct graph because this graph has a y -intercept of left parenthesis 0 comma 4 right parenthesis .
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1 answer

To determine whether the graph represents the equation \( y = -\frac{1}{3}x + 4 \), let's analyze the equation step by step.

  1. Identify the y-intercept: In the equation \( y = -\frac{1}{3}x + 4 \), the y-intercept occurs when \( x = 0 \). Plugging \( x = 0 \) into the equation gives: \[ y = -\frac{1}{3}(0) + 4 = 4. \] Therefore, the y-intercept of the line is \( (0, 4) \).

  2. Check the slope: The slope of the line is \( -\frac{1}{3} \), which is negative. This means that the line should slope downwards as \( x \) increases.

  3. Analyze the given points: The points given in the question are \( (0, 3) \) and \( (3, 2) \). The first point \( (0, 3) \) indicates the y-coordinate when \( x = 0 \), and according to our analysis, the correct y-intercept from the equation should be \( (0, 4) \).

Given all of this:

  • The y-intercept provided in the graph is \( (0, 3) \) instead of \( (0, 4) \).
  • The graph's slope also indicates that it does not match the expected behavior of the equation.

Based on this reasoning, the correct response would be:

No, it is not the correct graph because this graph used (0, 3) as the y-intercept.