S1 Review #1

Simplify

100

Simplify 3x+2y-x

2x+2y

200

Simplify 3(x+2)

3x+6

300

Simplify

3x(x+2)

3x^2+6x

400

3x^2(x+2)

3x^3+6x^2

500

3(x^2)+3x^2

6x^2

Solve

100

x+3=3

x=0

200

3x=6

x=2

300

3(x+2)=9

x=1

400

x(x)=x^2-3

No Solution 0=-3

500

x(x)-3=x^2-3

All Solutions

Writing Linear Equations

100

Write the formula for Slope Intercept form

y=mx+b

200

Write the formula for point slope form

y-y1=m(x-x1)

300

What point is used in this equation?

y-2=3(x+2)

400

What is the intercept in this equation? write it as an ordered pair

y=2x-6

(0,-6)

500

Solve for b

y=2x+b  (2,2)

2=2(2)+b

2=4+b

-4   -4

b=-2

Slope

100

Slope is Blank OVER Blank

Rise Over Run

200

Positive or Negative slope?

-3/2

Negative

300

Calculate the slope

(3,3) (7,2)

y2-y1/x2-x1-1

-1/4

2-3/7-3

400

what is the slope of the equation y=1/3x+2

1/3

500

Is the slope positive or Negative?

(-3,-3,)(3,3)

Positive ( goes from Q3 to Q1)

R Value

100

Correlations are seen on a type of graph called a...

Scatterplot

200

r=.75

Strong Positive

300

r=.2

Weak positive

400

r=-.9

negative strong

500

r=-.000001

weak or no correlation negative