1. **State the problem:** We need to find the y-intercept and slope of the line given by the equation $$-3y = 15 - 4x$$ and identify which line (A, B, C, or D) represents this equation on the graph.
2. **Rewrite the equation in slope-intercept form:** The slope-intercept form is $$y = mx + b$$ where $$m$$ is the slope and $$b$$ is the y-intercept.
Starting with:
$$-3y = 15 - 4x$$
Divide both sides by $$-3$$:
$$y = \frac{15 - 4x}{-3}$$
Rewrite the fraction:
$$y = \frac{15}{-3} - \frac{4x}{-3}$$
Simplify each term:
$$y = -5 + \frac{4}{3}x$$
Or equivalently:
$$y = \frac{4}{3}x - 5$$
3. **Identify slope and y-intercept:**
- The slope $$m = \frac{4}{3}$$ (positive slope)
- The y-intercept $$b = -5$$
4. **Match the line on the graph:**
- The line must have a positive slope (so lines A, B, and D are candidates).
- The y-intercept is at $$-5$$, which means the line crosses the y-axis at $$-5$$.
- Line D crosses the y-axis at 5, so it is not correct.
- Line B passes through (3,1), check if it fits the equation:
$$y = \frac{4}{3} \times 3 - 5 = 4 - 5 = -1$$, but point is (3,1), so no.
- Line A has a positive slope and presumably crosses y at -5, so line A matches.
**Final answers:**
- The y-intercept is $$-5$$.
- The slope is $$\frac{4}{3}$$.
- Line A is the graph of the line $$-3y = 15 - 4x$$.
Graphing Linear Equation F104D7
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