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

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

Multiply the -3 and 4 to get 12.

Now divide the -12 from both sides.

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

Now re-enter the info back into the formula.

Then you've got your formula

One unique triangle, because those angles add up to 180, and that's how many degrees there are in one triangle.