Questions: Find the slope-intercept equation for the line with the indicated slope and y-intercept. Slope 2/3; y-intercept (0,-9)
Transcript text: Find the slope-intercept equation for the line with the indicated slope and $y$-intercept. Slope $\frac{2}{3} ; y$-intercept $(0,-9)$
Solution
Solution Steps
To find the slope-intercept equation of a line, we use the formula \( y = mx + b \), where \( m \) is the slope and \( b \) is the y-intercept. Given the slope \(\frac{2}{3}\) and the y-intercept \((0, -9)\), we can directly substitute these values into the formula to get the equation of the line.
Step 1: Identify the Slope and Y-Intercept
The slope \( m \) is given as \( \frac{2}{3} \) and the y-intercept \( b \) is given as \( -9 \).
Step 2: Write the Slope-Intercept Form
Using the slope-intercept form of a line, which is expressed as:
\[
y = mx + b
\]
we can substitute the values of \( m \) and \( b \) into the equation.
Step 3: Substitute Values
Substituting \( m = \frac{2}{3} \) and \( b = -9 \) into the equation gives:
\[
y = \frac{2}{3}x - 9
\]
Final Answer
The equation of the line in slope-intercept form is
\[
\boxed{y = \frac{2}{3}x - 9}
\]