Question

How do you write an equation of a line with slope 1/2 and y-intercept -3?

Answer 1

`y=1/2x-3`

Explanation:

information given
slope is `m=\color(red)(1/2)`
y-intercept is `b=\color(blue)(-3)`

application formula
slope-intercept `y=\color(red)(m)x+\color(blue)(b)`

calculation input
input values as coded `y=\color(red)(1/2)x+(\color(blue)(-3))`
simplify `y=1/2x-3`