Math Nation Algebra

Describe the relationship between the variables.

• Weak positive correlation

• Weak negative correlation

• Strong positive correlation

• Strong negative correlation

Estimate the correlation coefficient.

• r=0

• r=-1

• r=1

• r=2

• A

• B

• C

• D

• E

• A

• B

• C

• D

• E

• A

• B

• C

• D

Where/what is the mistake?

• Line 2 - You should add 12 to both sides.

• Line 4 - You should multiply both sides by the reciprocal.

• Line 4 - You should multiply both sides by the original fraction. 

• Line 5 - There was a calculation error.

• 4w-10
• -2w+10
• 2w-10
• -4w + 10

Solve:  -3 ≤ 2x - 1 ≤ 5

• -1 ≤ x ≤ 3

• -1 < x < 3

• 1 < x < 3

• 1 ≤ x ≤ 3