Alg 4.2.1 HW 4-36 to 4-41

Last updated over 4 years ago

15 questions

1

4.2.1 Solving Systems of Equations Using Substitution

4-36 Ms. Hoang’s class conducted an experiment by rolling a marble down different length slanted boards and timing how long it took. The results are shown at right. Describe the association by selecting the true statements
below.

1

8a + a - 3 = 6a - 2a - 3

1

(m + 2)(m + 3) = (m + 2)(m - 2)

1

i

ii

iii

iv

part b Solve the system of equations above to determine how many touchdowns and how many field goals the Fabulous Footballers had last night.

4 touchdowns and 9 field goals

4 touchdowns and 4 field goals

9 touchdowns and 4 field goals

9 touchdowns and 9 field goals

4-39 Yesterday Mica was given some information and was asked to find a linear equation. But last night her cat destroyed most of the information! Complete the table and graph the line that represents Mica’s rule.

Mica thinks the equation for this graph could be 2x+y=−3. Is she correct?

No, neither of the points would make the equation true

No, only one of the points make the equation true

Yes, both (-3, 3) and (-2, 1) Make the equation true

1

Kevin

1

How do you know?

1

4-36 Ms. Hoang’s class conducted an experiment by rolling a marble down different length slanted boards and timing how long it took. The results are shown at right. Describe the association by selecting the true statements 
below. 

Strong

Moderate

Weak

Positive

Negative

Linear

Non-linear

With no outliers or clusters

With 1 or more outliers or clusters

(m + 2)(m + 3) = (m + 2)(m - 2)

i

ii

iii

iv

part b Solve the system of equations above to determine how many touchdowns and how many field goals the Fabulous Footballers had last night.

4 touchdowns and 9 field goals

4 touchdowns and 4 field goals

9 touchdowns and 4 field goals

9 touchdowns and 9 field goals

Mica thinks the equation for this graph could be 2x+y=−3. Is she correct?

No, neither of the points would make the equation true

No, only one of the points make the equation true

Yes, both (-3, 3) and (-2, 1) Make the equation true

Kevin

Katy

Katy

Alg 4.2.1 HW 4-36 to 4-41

Alg 4.2.1 HW 4-36 to 4-41

8a + a - 3 = 6a - 2a - 3

4-39 Yesterday Mica was given some information and was asked to find a linear equation. But last night her cat destroyed most of the information! Complete the table and graph the line that represents Mica’s rule.

How do you know?

4-36 Ms. Hoang’s class conducted an experiment by rolling a marble down different length slanted boards and timing how long it took. The results are shown at right. Describe the association by selecting the true statements below.

8a + a - 3 = 6a - 2a - 3

(m + 2)(m + 3) = (m + 2)(m - 2)

part b Solve the system of equations above to determine how many touchdowns and how many field goals the Fabulous Footballers had last night.

4-39 Yesterday Mica was given some information and was asked to find a linear equation. But last night her cat destroyed most of the information! Complete the table and graph the line that represents Mica’s rule.

Mica thinks the equation for this graph could be 2x+y=−3. Is she correct?

How do you know?

(m + 2)(m + 3) = (m + 2)(m - 2)

4-36 Ms. Hoang’s class conducted an experiment by rolling a marble down different length slanted boards and timing how long it took. The results are shown at right. Describe the association by selecting the true statements
below.