Math Problem Statement
4−2y=8−2x
Step 2 of 2 : Graph the equation by plotting the x- and y-intercepts. If an intercept does not exist, or is duplicated, use another point on the line to plot the graph.
Solution
We are given the equation:
To graph this equation, we need to first find the x-intercept and y-intercept.
Step 1: Rewrite the equation in slope-intercept form
Let's first isolate :
Subtract 4 from both sides:
Now divide by to solve for :
So the equation is now in the form:
Step 2: Find the intercepts
y-intercept:
The y-intercept occurs where . Substituting into the equation :
Thus, the y-intercept is .
x-intercept:
The x-intercept occurs where . Substituting into the equation :
Solving for :
Thus, the x-intercept is .
Step 3: Plot the points
We now have the intercepts:
- x-intercept:
- y-intercept:
These two points are enough to graph the line. You can plot them on a coordinate plane and draw a straight line through them.
Step 4: Additional point (if necessary)
If you want more accuracy in plotting, pick a third point. For example, substitute into the equation :
So another point is .
Now, you have three points: , , and . Plotting these will give a clear graph of the line.
Would you like more details on any part of this process? Or do you have any questions?
Related questions:
- How do you find the slope of a line from its equation?
- What is the difference between an equation in standard form and slope-intercept form?
- How can you graph an equation without using intercepts?
- How do you check if two lines are parallel or perpendicular based on their equations?
- What happens if an equation doesn't have an x- or y-intercept?
Tip: Always check the slope and y-intercept directly from the equation when you're graphing a line to save time.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Intercepts
Graphing
Formulas
y = mx + b (slope-intercept form)
x-intercept: y = 0
y-intercept: x = 0
Theorems
Slope-Intercept Form Theorem
Intercept Theorem
Suitable Grade Level
Grades 7-9