Pregunta
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Graph each inequality. \( \begin{array}{lll}\text { 1. } yx+12 & \text { 3. } 2 x+2 y<18 \\ \text { 4. } y-2>-2(x-1) & \text { 5. } 5 x+y>10 & \text { 6. }-24 x+8 y \geq-48 \\ \text { 7. } 2 y+6 \geq 0 & \text { 8. } \frac{1}{2} x+1<3 & \text { 9. } \frac{2}{3} x-\frac{10}{3}>-4\end{array} \)

Ask by Martinez Ruiz. in the United States
Mar 09,2025

Solución de inteligencia artificial de Upstudy

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To graph each inequality, follow these steps for each one: 1. **\( y < x - 3 \):** Draw the line \( y = x - 3 \) dashed and shade below it. 2. **\( y > x + 12 \):** Draw the line \( y = x + 12 \) dashed and shade above it. 3. **\( 2x + 2y < 18 \):** Simplify to \( x + y < 9 \), draw \( y = 9 - x \) dashed and shade below. 4. **\( y - 2 > -2(x - 1) \):** Simplify to \( y > -2x + 4 \), draw \( y = -2x + 4 \) dashed and shade above. 5. **\( 5x + y > 10 \):** Simplify to \( y > -5x + 10 \), draw \( y = -5x + 10 \) dashed and shade above. 6. **\( -24x + 8y \geq -48 \):** Simplify to \( y \geq 3x - 6 \), draw \( y = 3x - 6 \) solid and shade above. 7. **\( 2y + 6 \geq 0 \):** Simplify to \( y \geq -3 \), draw \( y = -3 \) solid and shade above. 8. **\( \frac{1}{2}x + 1 < 3 \):** Simplify to \( x < 4 \), draw \( x = 4 \) dashed and shade to the left. 9. **\( \frac{2}{3}x - \frac{10}{3} > -4 \):** Simplify to \( x > -1 \), draw \( x = -1 \) dashed and shade to the right. Each inequality is graphed with the appropriate line type and shading based on the inequality sign.

Solución

1. For the inequality \[ y < x - 3, \] write the boundary as \[ y = x - 3. \] Because the inequality is strict (\(<\)), the line is drawn dashed. The region satisfying the inequality is the area below this line. --- 2. For the inequality \[ y > x + 12, \] write the boundary as \[ y = x + 12. \] Since the inequality is strict (\(>\)), use a dashed line, and shade the region above the line. --- 3. For the inequality \[ 2x + 2y < 18, \] divide both sides by 2 to obtain \[ x + y < 9. \] The boundary line is \[ x + y = 9, \] or written in slope–intercept form, \[ y = 9 - x. \] Draw this line dashed (because of the \(<\) sign) and shade the region below it (points where \(x+y\) is less than 9). --- 4. For the inequality \[ y - 2 > -2(x - 1), \] first expand the right–side: \[ y - 2 > -2x + 2. \] Then add 2 to both sides: \[ y > -2x + 4. \] The boundary line is \[ y = -2x + 4, \] drawn dashed (since the inequality is strict). Shade the region above the line (where \(y\) is greater than \(-2x+4\)). --- 5. For the inequality \[ 5x + y > 10, \] solve for \(y\) by subtracting \(5x\): \[ y > -5x + 10. \] The boundary line is \[ y = -5x + 10. \] Since the inequality is strict (\(>\)), draw the line dashed and shade the region above it. --- 6. For the inequality \[ -24x + 8y \geq -48, \] divide both sides by 8 (note that division by a positive number does not change the inequality): \[ -3x + y \geq -6. \] Solve for \(y\) by adding \(3x\) to both sides: \[ y \geq 3x - 6. \] The boundary line is \[ y = 3x - 6. \] Because the inequality is non–strict (\(\geq\)), draw the line solid and shade the region above the line. --- 7. For the inequality \[ 2y + 6 \geq 0, \] solve for \(y\) by subtracting 6: \[ 2y \geq -6, \] and then dividing by 2: \[ y \geq -3. \] The boundary is the horizontal line \[ y = -3. \] Since the inequality is \(\geq\), draw it as a solid line and shade the region above the line. --- 8. For the inequality \[ \frac{1}{2}x + 1 < 3, \] solve for \(x\). Subtract 1 from both sides: \[ \frac{1}{2}x < 2. \] Multiply both sides by 2: \[ x < 4. \] This inequality represents a vertical line at \[ x = 4. \] Since the inequality is strict (\(<\)), draw the vertical line dashed and shade the region to the left of the line. --- 9. For the inequality \[ \frac{2}{3}x - \frac{10}{3} > -4, \] first eliminate the denominators by multiplying the entire inequality by 3: \[ 2x - 10 > -12. \] Then add 10 to both sides: \[ 2x > -2. \] Divide by 2: \[ x > -1. \] This gives a vertical boundary line at \[ x = -1, \] drawn dashed because the inequality is strict, with the region to the right of the line being shaded.

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Extra Insights

To graph the given inequalities, first, we need to transform them into equations to find the boundary lines, then shade the appropriate regions according to the inequalities. 1. For \( y < x - 3 \): The line \( y = x - 3 \) is dashed (since it's <), and you shade below the line. 2. For \( y > x + 12 \): The line \( y = x + 12 \) is dashed, and shade above this line. 3. For \( 2x + 2y < 18 \): Rearranging gives \( y < -x + 9 \). Dashed line, shade below. 4. For \( y - 2 > -2(x - 1) \): Simplifying gives \( y > -2x + 4 \). Dashed line, shade above. 5. For \( 5x + y > 10 \): Rearranging gives \( y > -5x + 10 \). Dashed line, shade above. 6. For \( -24x + 8y \geq -48 \): Rearranging gives \( y \geq 3x - 6 \). Solid line (because it's ≥), shade above. 7. For \( 2y + 6 \geq 0 \): Rearranging gives \( y \geq -3 \). Solid line, shade above. 8. For \( \frac{1}{2}x + 1 < 3 \): Rearranging gives \( x < 4 \). Dashed vertical line at \( x = 4 \), shade left. 9. For \( \frac{2}{3}x - \frac{10}{3} > -4 \): Rearranging gives \( x > -6 \). Dashed line at \( x = -6 \), shade right. Make sure to draw each boundary line accurately, and carefully shade the regions that satisfy each inequality! Happy graphing!

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