Lesson 1-1

Points and Lines

Objective:

Objective:

To find the intersection of two lines and to find the length and the coordinates

of the midpoint of a segment.

Definitions:

Definitions:

coordinates

Definitions:

x-axis

Definitions:

y-axis

Definitions:

origin

Definitions:

quadrants

Definitions:

x-coordinate

Definitions:

y-coordinate

Definitions:

solution

Definitions:

graph

Definitions:

y-intercept

Definitions:

x-intercept

Definitions:

linear equation

Definitions:

general form of a linear equation

Sketch the graph of 3x + 2y = 18.

Determine where the lines intersect.

2x + 5y = 103x + 4y = 12

When two linear equations have no common solution, their graph

are ???

When two linear equations have infinitely many solutions, their

graph are ???

Solve. Then graph the solutions.

3x - y = 97x - 5y = 25

Distance Formula:

Midpoint Formula:

If A = (-1, 9) and B = (4, -3), find the length of AB and the

coordinates of the midpoint of AB.

Assignment:Assignment:

Pgs. 4-5 Pgs. 4-5 C.E.C.E. 1-10 all 1-10 all

W.E.W.E. 1, 3, 7, 10, 11 1, 3, 7, 10, 11