### Home > PC > Chapter 1 > Lesson 1.1.1 > Problem 1-7

1-7.

Find the equation of the line that: (Try this using the eTool (Desmos).) Homework Help ✎

Passes through the points (4, 8) and (8, 17).

Is parallel to the result in part (a) but goes through the point (−12, 20).

What are two equation forms for a line?

*y* = m*x* + b where m = slope and b = *y*-intercept

(*y* − *y*_{1}) = m(*x* − *x*_{1}) where m = slope and (*x*_{1}, *y*_{1}) is a point.

How do you find slope from two points?

What do you know about the slopes of two parallel lines?

Use one of the equation forms in part (a) above to find the equation.

They are the same.