# How do you find slope-intercept

• October 6th 2009, 02:30 PM
md56
How do you find slope-intercept
I have to write an equation y=mx+b, I know the slope (m) and a point that the line passes through (3, 2)

Slope is 1/2
• October 6th 2009, 02:35 PM
skeeter
Quote:

Originally Posted by md56
I have to write an equation y=mx+b, I know the slope (m) and a point that the line passes through (3, 2)

Slope is 1/2

$y - y_1 = m(x - x_1)$

then convert to slope-intercept form
• October 6th 2009, 02:36 PM
mr fantastic
Quote:

Originally Posted by md56
I have to write an equation y=mx+b, I know the slope (m) and a point that the line passes through (3, 2)

Slope is 1/2

$y = \frac{x}{2} + b$.

Now substitute (3, 2) and solve for b.
• October 6th 2009, 06:39 PM
md56
Why did I not think of that? Thanks!