A line has a slope of


2 and a y-intercept of 21. Write its equation in slope-intercept form.
Write your answer using integers, proper fractions, and improper fractions in simplest form.

1 answer

The slope-intercept form of a line is given by the equation:

\[ y = mx + b \]

where \( m \) is the slope and \( b \) is the y-intercept.

Given the slope \( m = -2 \) and the y-intercept \( b = 21 \), we can substitute these values into the slope-intercept form equation:

\[ y = -2x + 21 \]

Thus, the equation of the line in slope-intercept form is:

\[ y = -2x + 21 \]