## Algebra and Trigonometry 10th Edition

Use the intercept form of the line. $\frac{x}{a}+\frac{y}{b}=1$ (where intercepts are (a,0) and (0,b)) Put the given intercepts into the equation: $\frac{x}{c}+\frac{y}{c}=1$ x+y=c -3+4=c c=1 x+y=1