## Introductory Algebra for College Students (7th Edition)

False "The slope of the line whose equation is $3x + y = 7$ is $-3$."
This statement is false. Let us look at the slope by transforming this equation into the slope-intercept form. The slope-intercept form of this equation is given by the formula: $$y = mx + b$$ where $m$ is the slope and $b$ is the y-intercept. First, we subtract $3x$ from each side of the equation: $$y = -3x + 7$$ This equation has been rewritten in slope-intercept form. As we can see from this equation, the slope is $-3$, not $3$. We can now rewrite the original statement into a true statement in this way: "The slope of the line whose equation is $3x + y = 7$ is $-3$."