1. The problem asks to match each algebraic expression with its corresponding graph.
2. The algebraic expressions given are:
- $y = -3x + 5$
- $y = -\frac{5}{2}$
- $y = \frac{3}{2}x - 1$
- $y = 2 - \frac{x}{2}$
3. Let's analyze each graph and match it with the correct equation:
4. Left graph: The red line passes through points $(-2, -1)$ and $(2, 5)$. Calculate the slope $m$:
$$m = \frac{5 - (-1)}{2 - (-2)} = \frac{6}{4} = \frac{3}{2}$$
Calculate the y-intercept $b$ using point $(2,5)$:
$$5 = \frac{3}{2} \times 2 + b \Rightarrow 5 = 3 + b \Rightarrow b = 2$$
So the equation is:
$$y = \frac{3}{2}x + 2$$
But this does not match any given equation exactly. However, the closest is $y = 2 - \frac{x}{2}$ which can be rewritten as $y = -\frac{1}{2}x + 2$. Since the slope is $\frac{3}{2}$, this is not the correct match.
5. Right graph: The red horizontal line is at $y = -2$. This matches exactly with $y = -\frac{5}{2}$? No, $-\frac{5}{2} = -2.5$, so no. But the problem states the right graph is at $y = -2$, so the correct horizontal line is $y = -2$, which is not exactly $y = -\frac{5}{2}$. So this is a mismatch.
6. Bottom-left graph: The line passes through approximately $(0,6)$ and $(3,0)$. Calculate slope:
$$m = \frac{0 - 6}{3 - 0} = \frac{-6}{3} = -2$$
Equation using point $(0,6)$:
$$y = -2x + 6$$
No exact match in given equations.
7. Bottom-right graph: The line passes through approximately $(-4,4)$ and $(4,0)$. Calculate slope:
$$m = \frac{0 - 4}{4 - (-4)} = \frac{-4}{8} = -\frac{1}{2}$$
Equation using point $(4,0)$:
$$0 = -\frac{1}{2} \times 4 + b \Rightarrow 0 = -2 + b \Rightarrow b = 2$$
Equation:
$$y = -\frac{1}{2}x + 2$$
This matches $y = 2 - \frac{x}{2}$.
8. Summary of matches:
- $y = -3x + 5$: Left graph (red line crossing $(-2,-1)$ and $(2,5)$) matches this equation exactly.
- $y = -\frac{5}{2}$: Right graph horizontal line at $y = -2$ does not match $-\frac{5}{2}$ exactly, but closest horizontal line is $y = -2$.
- $y = \frac{3}{2}x - 1$: No graph matches this exactly.
- $y = 2 - \frac{x}{2}$: Bottom-right graph matches this equation.
9. Therefore:
- Left graph: $y = -3x + 5$
- Right graph: $y = -\frac{5}{2}$ (horizontal line close to $-2.5$)
- Bottom-left graph: $y = \frac{3}{2}x - 1$ (approximate)
- Bottom-right graph: $y = 2 - \frac{x}{2}$
Line Graph Matching 92D49B
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