April 18th

Algebra I

Today we discussed
Our conversation about systems of equations moved on to solving the equations to find the exact point or points of intersection.  Recall that lines can intersect at a single point, no point at all (parallel lines) or at infinitely many points (same line).  The answer(s) you get when you solve the equations mathematically by substituting one of the variables is where the lines intersect.

Sections Covered in Textbook
1) 11-3: Substitution (pages 447-451)

Video Tutorials
1)  Solving systems of equations using substitution method
http://www.virtualnerd.com/algebra-2/linear-systems/solve-algebraically/solve-by-substitution/equations-solution-by-substitution

Assignments
1) Pages 450-451 #'s 17-33 odd, 41

**PLEASE CHECK ODD ANSWER IN BACK OF TEXTBOOK

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Pre-Algebra

Today we discussed
Our discussions about graphing moved on to intercepts.  Intercepts are where a line crosses either the x- or y-axis.  The x-intercept can be found when y=0 and the y-intercept can be found when x=0.  Because it take only two points to determine a line, a line can be graphed by using both the x-intercept and y-intercept and connecting those points.

Sections Covered in Textbook
1) 8-9: Intercepts (pages 308-309)

Video Tutorials
1) Graphing using the x-intercept and y-intercept
http://www.virtualnerd.com/algebra-1/linear-equation-analysis/intercept/intercept-examples/x-y-intercepts-graph-standard-line

Assignments
1) Page 309 #'s 14-22 all, 27

**PLEASE CHECK ODD ANSWER IN BACK OF TEXTBOOK