Lesson 1.8- Algebra Review

Algebraic Formulas

100

y=mx+b

This formula is an example of...?

Slope Intercept Form

200

Y₂-Y₁=m(X₂-X₁)

This formula is an example of...?

Point Slope Form

300

This is an example of midpoint formula. (Write out on white board)

Response on white board

400

What is the stregnth of standard form?

Ex: Ax+By=C

Finding the X and Y Intercepts.

500

What is Distance Formula? (Write on white board)

Hint: Think of pythagorean theorem.

a= change in X

b= change in Y

c²= distance 

Write out on white board

Characteristics of Lines

100

Parallel lines are ____________.

Coplanar.

200

Skew lines are __________.

Non-Coplanar

300

y=-1x+5

-3y=3x+9

These lines are _________.

Parallel

400

y=-1x+5

y=x+30

These lines are _________.

Perpendicular.

500

Perpendicular lines have ________ __________ as their slopes.

Negative (Opposite) Reciprocals.

Equations of Lines

100

What is the equation of a parallel line to the eqaution   y=-7x-5 that goes through A(1,3)?

y=-7x+10

200

What is the equation of a perpendicular line th the eqaution y=1/4x-2 that goes through A(-12,4)?

y=-4x-44

300

Write the eqaution in point slope form.

m=13  (-3,8)

y-8=-3(x+3)

400

Perpendicular to y=-7/3x-1 and goes through (14,5/2). In Point Slope Form.

y-5/2=3/7(x-14)

500

What is the equation of a perpendicular bisector to AB wher A(-1,5) and B(3,11)? point slope form.

y-8=-2/3(x-1)