1. **Problem:** Write an equation for the line that is perpendicular to the given line and passes through $(-1,3)$. The given line is $-y=5-10x$.
2. **Put the given line into slope-intercept form.**
Start with:
$$-y=5-10x$$
Multiply both sides by $-1$:
$$y=-5+10x$$
So the slope of the given line is $10$.
3. **Find the slope of the perpendicular line.**
Perpendicular slopes are negative reciprocals, so:
$$m=-\frac{1}{10}$$
4. **Use point-slope form.**
The formula is:
$$y-y_1=m(x-x_1)$$
Substitute $m=-\frac{1}{10}$ and $(-1,3)$:
$$y-3=-\frac{1}{10}(x-(-1))$$
$$y-3=-\frac{1}{10}(x+1)$$
5. **Simplify to get slope-intercept form.**
Distribute:
$$y-3=-\frac{1}{10}x-\frac{1}{10}$$
Add $3$ to both sides:
$$y=-\frac{1}{10}x+\frac{29}{10}$$
6. **Final answer:**
$$y=-\frac{1}{10}x+\frac{29}{10}$$
Perpendicular Line 7F8368
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.