Question

What is the equation of the line that passes through (1, 3) and (-2, -3)?

Answer 1

y = 2x + 1

Explanation:

The slope is

`(-3-3)/(-2-1)=2`

Substituting into point-slope form, the equation is

`y-3=2(x-1)`

which rearranges into slope-intercept form as:

`y-3=2x-2 \\ \\ y=2x+1`