Math Problem Statement

for the straight lin e 8y=-6x+20 find the x-intercept and y-intercept using algebraic methods

Solution

To find the x-intercept and y-intercept of the line 8y=6x+208y = -6x + 20, we follow these steps:


1. Find the x-intercept

The x-intercept is the point where the line crosses the x-axis, i.e., when y=0y = 0.

Substitute y=0y = 0 into the equation:

8(0)=6x+208(0) = -6x + 20

Simplify:

0=6x+200 = -6x + 20

Solve for xx:

6x=20x=206=1036x = 20 \quad \Rightarrow \quad x = \frac{20}{6} = \frac{10}{3}

Thus, the x-intercept is:

(103,0)\boxed{\left(\frac{10}{3}, 0\right)}


2. Find the y-intercept

The y-intercept is the point where the line crosses the y-axis, i.e., when x=0x = 0.

Substitute x=0x = 0 into the equation:

8y=6(0)+208y = -6(0) + 20

Simplify:

8y=208y = 20

Solve for yy:

y=208=52y = \frac{20}{8} = \frac{5}{2}

Thus, the y-intercept is:

(0,52)\boxed{\left(0, \frac{5}{2}\right)}


Final Answer:

  • x-intercept: (103,0)\left(\frac{10}{3}, 0\right)
  • y-intercept: (0,52)\left(0, \frac{5}{2}\right)

Would you like me to graph this line or provide further details? 😊

Related Questions:

  1. How do you determine the slope of the line from the equation 8y=6x+208y = -6x + 20?
  2. What is the slope-intercept form of 8y=6x+208y = -6x + 20?
  3. How do you rewrite 8y=6x+208y = -6x + 20 in standard form?
  4. Can you verify the intercepts using another form of the equation?
  5. How would you solve for intercepts if the equation were in another form, like y=mx+by = mx + b?

Tip:

Always double-check your calculations by substituting the intercept values back into the original equation to ensure they satisfy it.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Intercepts

Formulas

x-intercept formula: set y = 0
y-intercept formula: set x = 0

Theorems

Point of intersection with axes (x-intercept and y-intercept)

Suitable Grade Level

Grades 8-10