Which of the following points is a solution to the linear inequality y>1/9x−2/9?(1 point)

Responses

(0,−1/9)
left parenthesis 0 comma negative Start Fraction 1 over 9 End Fraction right parenthesis

(0,−49)
left parenthesis 0 comma negative Start Fraction 4 over 9 End Fraction right parenthesis

(0,−29)
left parenthesis 0 comma negative Start Fraction 2 over 9 End Fraction right parenthesis

(0,−13)

3 answers

To determine which of the given points is a solution to the linear inequality \( y > \frac{1}{9}x - \frac{2}{9} \), we can substitute the x-value of each point into the inequality and check if the corresponding y-value satisfies it.

The inequality \( y > \frac{1}{9}x - \frac{2}{9} \) can be simplified for \( x = 0 \):

\[ y > \frac{1}{9}(0) - \frac{2}{9} \] \[ y > -\frac{2}{9} \]

Now we can check each point:

  1. Point (0, -1/9): \[ -\frac{1}{9} > -\frac{2}{9} \quad \text{(True)} \]

  2. Point (0, -4/9): \[ -\frac{4}{9} > -\frac{2}{9} \quad \text{(False)} \]

  3. Point (0, -2/9): \[ -\frac{2}{9} > -\frac{2}{9} \quad \text{(False)} \]

  4. Point (0, -1/3): \[ -\frac{1}{3} > -\frac{2}{9} \quad \text{(True since -1/3 is -3/9 and -3/9 > -2/9)} \]

The only points that satisfy the inequality are (0, -1/9) and (0, -1/3).

Therefore, the solution to the inequality is (0, -1/9).

Use the image to answer the question.

A coordinate plane shows a graph of an upward-sloping, diagonal, dashed line, with shading extending from the line to the left. The line starts in quadrant 3, extends through quadrant 4, and ends in quadrant 1.

Is the point (0,−3) a solution to the inequality y>45x−3, as shown on the graph?

(1 point)
Responses

Yes, because (0,−3) falls within the shaded region.
Yes, because left parenthesis 0 comma negative 3 right parenthesis falls within the shaded region.

No, because (0,−3) falls within the shaded region.
No, because left parenthesis 0 comma negative 3 right parenthesis falls within the shaded region.

Yes, because (0,−3) falls on the boundary line.
Yes, because left parenthesis 0 comma negative 3 right parenthesis falls on the boundary line.

No, because (0,−3) falls on the boundary line.

To determine whether the point \((0, -3)\) is a solution to the inequality \(y > 45x - 3\), we need to analyze the line represented by the equation and the shading on the graph.

  1. Boundary Line: The equation is \(y = 45x - 3\), which is a straight line with a positive slope.

  2. Test the Point: We substitute \(x = 0\) into the line equation: \[ y = 45(0) - 3 = -3 \] So, the point \((0, -3)\) lies exactly on the boundary line.

  3. Shading: The shading extends from the line to the left, indicating that the points in the shaded area satisfy the inequality.

  4. Types of Inequality: As this is a strict inequality \(y > 45x - 3\) (not including the equal part), points on the boundary line do not satisfy the inequality.

Given that (0, -3) is on the boundary line, it does not fall in the shaded area defined by \(y > 45x - 3\).

Therefore, the correct response is:

No, because (0, -3) falls on the boundary line.