Math Problem Statement
Solve the system by graphing
Solve the system by graphing
Solution
The system of equations provided is:
To solve this system by graphing, let's break down the steps:
Step 1: Graph the first equation
This is in slope-intercept form , where:
- The slope , meaning the line will go down 4 units for every 1 unit you move to the right.
- The y-intercept , which is where the line crosses the y-axis.
Step 2: Graph the second equation
Rearrange it to the slope-intercept form: Now, we see that:
- The slope , meaning the line goes up 2 units for every 1 unit to the right.
- The y-intercept , which is where the line crosses the y-axis.
Step 3: Plot the lines on a graph
- For , start at the point and use the slope of -4 to plot another point. Draw the line through these points.
- For , start at the point and use the slope of 2 to plot another point. Draw the line through these points.
Step 4: Find the intersection
The solution to the system is where the two lines intersect.
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Graphing Systems of Equations
Slope-Intercept Form
Formulas
Slope-intercept form: y = mx + b
Theorems
Intersection of two lines gives the solution to a system of equations
Suitable Grade Level
Grades 8-10