Math Problem Statement
17Mark For Review
The rational function g is defined by an equation in the form g(x)=ax+b, where a and b are constants. The partial graph of y=g(x) is shown. If h(x)=g(x+2), which equation could define function h?
h(x)=12x+2 h(x)=12x+4 h(x)=12x+6 h(x)=12xx+6
Solution
To solve the problem, let's first analyze the given graph of , where .
Step 1: Identify the slope and y-intercept of
Since the function is linear (in the form ), the graph will be a straight line.
Given the grid lines in the graph:
- The slope can be determined by the rise over run (change in over change in ).
- The -intercept is the point where the line crosses the -axis.
Step 2: Translate the function
The function represents a horizontal shift of the function by 2 units to the left. The general form of is . Applying the shift:
So, the new equation for is .
Step 3: Match with the options
From the options given:
- (this is the same as option 3)
We need to identify which equation matches the form .
Step 4: Identify the correct equation
The graph indicates the slope (as the line rises 1 unit for every 2 units run). To determine , note the original y-intercept on the graph. If the intercept was 2, and should match one of the choices.
Since , plug in :
If , then . But if the intercept was 4:
Thus, by matching the intercept shift, the equation would likely be .
So, the correct equation for is:
Would you like any further details or explanations?
Follow-up Questions:
- How can you identify the slope and y-intercept directly from the graph?
- What does the transformation do to the graph of ?
- How would the equation change if the transformation were ?
- How does the form of a linear equation help in identifying its graph?
- What other types of transformations can be applied to linear functions?
Tip:
When dealing with transformations, always remember how the horizontal and vertical shifts affect the graph. Horizontal shifts are counterintuitive, moving the graph in the opposite direction to the sign in the equation.
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Math Problem Analysis
Mathematical Concepts
Linear Functions
Graph Transformations
Formulas
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Theorems
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Suitable Grade Level
Grades 9-12
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