What is the equation of the line that passes through the point 4, -6 and has a slope of -3

Question

asked Sep 6, 2019 128k views

1 Answer

Jason Holloway · Answer 1 · 2019-09-11T19:59:08+0000

y = mx + b. Use this equation for most linear functions. Enter the information that is given to you.

- 6 = - 3(4) + b

Multiply the -3 and 4 to get 12.

-6 = - 12 + b

Now divide the -12 from both sides.

( - 6)/( - 12) = ( - 12)/( - 12) + b

-12 cancels out on the right side and your left with

$- \frac {1}{2} = b$
Now re-enter the info back into the formula.

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

Then you've got your formula