Question
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Find the \( x \) - and \( y \)-intercepts for the following equation. Then use the intercepts to graph the equation. \( y=2 x+5 \) \( x \)-intercept: \( y \)-intercept: \( (0 \),

Ask by King Tyler. in the United States
Mar 20,2025

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Answer

\( x \)-intercept: \( \left(-\frac{5}{2}, 0\right) \), \( y \)-intercept: \( (0,5) \).

Solution

1. **Find the \( y \)-intercept:** The \( y \)-intercept occurs when \( x=0 \). Substitute \( x=0 \) into the equation: \[ y = 2(0) + 5 = 5. \] So, the \( y \)-intercept is \( (0,5) \). 2. **Find the \( x \)-intercept:** The \( x \)-intercept occurs when \( y=0 \). Set \( y=0 \) in the equation and solve for \( x \): \[ 0 = 2x + 5. \] Subtract \( 5 \) from both sides: \[ -5 = 2x. \] Divide both sides by \( 2 \): \[ x = -\frac{5}{2}. \] So, the \( x \)-intercept is \( \left(-\frac{5}{2}, 0\right) \). 3. **Graphing the Equation:** - Plot the \( y \)-intercept \( (0,5) \). - Plot the \( x \)-intercept \( \left(-\frac{5}{2}, 0\right) \). - Draw a straight line through these two points. The line extends infinitely in both directions. The intercepts are: - \( x \)-intercept: \( \left(-\frac{5}{2}, 0\right) \) - \( y \)-intercept: \( (0,5) \)

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To find the \( x \)-intercept of the equation \( y = 2x + 5 \), set \( y = 0 \) and solve for \( x \). So, \( 0 = 2x + 5 \) leads to \( 2x = -5 \) or \( x = -\frac{5}{2} \). Thus, the \( x \)-intercept is \( \left(-\frac{5}{2}, 0\right) \). For the \( y \)-intercept, set \( x = 0 \). Substituting this into the equation gives \( y = 2(0) + 5 = 5 \). Therefore, the \( y \)-intercept is \( (0, 5) \). Now you can plot these intercepts, \( \left(-\frac{5}{2}, 0\right) \) and \( (0, 5) \), on a graph to visualize the line represented by the equation! Draw a straight line connecting these two points, and voilà—you have your graph!

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