Math Problem Statement
Which equation in standard form best represents the graph?
Solution
To determine which equation best represents the line on this graph, we need to identify the slope and y-intercept of the line and then check which equation in the answer choices matches it in standard form (Ax + By = C).
Step 1: Determine Two Points on the Line
The line crosses at two clear points:
- (-4, 10)
- (4, -1)
Step 2: Calculate the Slope
The slope can be calculated by:
So, the slope .
Step 3: Find the Equation in Point-Slope Form
Using the point-slope form, , with point :
Expanding this equation:
Step 4: Convert to Standard Form
To match the options, we convert to standard form by eliminating the fractions: \
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Coordinate Geometry
Linear Equations
Standard Form
Formulas
Slope formula m = (y2 - y1) / (x2 - x1)
Point-Slope Form y - y1 = m(x - x1)
Standard Form Ax + By = C
Theorems
Equation of a Line
Suitable Grade Level
Grades 8-10