Question

Write the equation of the line that passes through the points (1, 7) and (-3, -1)

Answer 1

y = 2x + 5

Explanation:

The slope is

`(-1-7)/(-3-1)=2`

Substituting into point-slope form, we get the equation to be

`y-7=2(x-1)`

which rearranges into slope-intercept form as:

`y-7=2x-2 \\ \\ y=2x+5`