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Graphing a line by first finding its \( x \)-and \( y \)-intercepts The equation of a line is given below. \[ 5 x+4 y=10 \] Find the \( x \)-intercept and the \( y \)-intercept. Then use them to graph the line. \( x x \)-intercept: \( y \)-intercept:

Ask by Reese Hall. in the United States
Mar 10,2025

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Answer

The \( x \)-intercept is at \((2, 0)\) and the \( y \)-intercept is at \(\left(0, \frac{5}{2}\right)\). Plot these points on a graph and draw a straight line through them to represent the equation \(5x + 4y = 10\).

Solution

**Step 1: Find the \( x \)-intercept** Set \( y=0 \) in the equation: \[ 5x + 4(0) = 10 \] This simplifies to: \[ 5x = 10 \quad \Longrightarrow \quad x = \frac{10}{5} = 2 \] Thus, the \( x \)-intercept is at \((2, 0)\). **Step 2: Find the \( y \)-intercept** Set \( x=0 \) in the equation: \[ 5(0) + 4y = 10 \] This simplifies to: \[ 4y = 10 \quad \Longrightarrow \quad y = \frac{10}{4} = \frac{5}{2} \] Thus, the \( y \)-intercept is at \(\left(0, \frac{5}{2}\right)\). **Step 3: Graph the Line** Plot the points \((2, 0)\) and \(\left(0, \frac{5}{2}\right)\) on a coordinate plane. Draw a straight line through these two intercepts to graph the line defined by the equation \(5x + 4y = 10\).

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Bonus Knowledge

To find the \( x \)-intercept, set \( y = 0 \) in the equation \( 5x + 4y = 10 \). This gives us \( 5x = 10 \) or \( x = 2 \). Therefore, the \( x \)-intercept is \( (2, 0) \). For the \( y \)-intercept, set \( x = 0 \) in the equation, resulting in \( 4y = 10 \) or \( y = \frac{5}{2} \). So, the \( y \)-intercept is \( (0, 2.5) \). Now that you have your intercepts, plot the points \( (2, 0) \) and \( (0, 2.5) \) on a graph. Draw a straight line through them, extending it in both directions, and you've successfully graphed the line represented by the equation \( 5x + 4y = 10 \)! Happy graphing!

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