Transcript The Extraordinary Sums of Leonhard Euler

Chapter 3: Parallel and Perpendicular Lines
Lesson 3-5: Lines in the Coordinate Plane
Goals: Graph lines, given their
equations, and write equations of
lines.
Linear Equations:

Slope-Intercept Form: The slopeintercept form of a linear equation is
y = mx + b, where m is the slope of
the line and b is the y-intercept.
Remember, the y-intercept is the ycoordinate of the point where a line
crosses the y-axis, and the x-intercept
is the x-coordinate of the point where a
line crosses the x-axis.
Linear Equations:

Standard Form: The standard form
of a linear equation is Ax + By = C,
where A, B, and C are real numbers
and A and B are not both zero. To
graph an equation written in standard
form, you can readily find two points
for the graph by finding the x- and yintercepts.
Linear Equations:

Point-Slope Form: The point-slope
form for a nonvertical line through
point (x1, y1) with slope m is
y - y1 = m(x - x1).
Assignment and Note:


HW 3-5: #3-42 (every 3rd), 38, 40,
41.
Quiz Friday.