Linear Algebra Chapter Review
Chapter
Chapter 4
Section
Linear Algebra Chapter Review
Solutions 45 Videos

Write the linear system that corresponds to each equation.

4x - 5 = 3

0.34mins
Q1a

Write the linear system that corresponds to each equation.

\frac{1}{2}x + 3 = 5

0.38mins
Q1b

Write the linear system that corresponds to each equation.

-2(x -3) = -4

0.44mins
Q1c

Write the linear system that corresponds to each equation.

\frac{1}{4}(x + \frac{2}{5}) = 0

1.00mins
Q1d

Solve each equation using algebra.

3x + 6 =12

0.11mins
Q2a

Solve each equation using algebra.

5 - 2x = 11

0.12mins
Q2b

Solve each equation using algebra.

4x - 8 = 12

0.11mins
Q2c

Solve each equation using algebra.

-6x + 8 = -10

0.13mins
Q2d

Determine the x-intercept of each of the following.

y = -5x +20

0.16mins
Q3a

Determine the x-intercept of each of the following.

2x + y = 10

0.12mins
Q3b

A promoter is holding a video dance. Tickets cost \$15 per person, and he has given away 10 free tickets to radio stations. • Create the linear relation that models the money the promoter will earn in ticket sales in terms of the number of people attending the dance. Buy to View 1.02mins Q4a A promoter is holding a video dance. Tickets cost \$15 per person, and he has given away 10 free tickets to radio stations.

Here is the linear equation that represents the above.  \displaystyle R = 15n - 150 

• Graph the linear relation.
0.24mins
Q4b

A promoter is holding a video dance. Tickets cost \$15 per person, and he has given away 10 free tickets to radio stations. Here is the linear equation that represents the above.  \displaystyle R = 15n - 150  and below is the graph • Write the equation you would use to determine how many people attended if ticket sales were only \$600. Estimate the solution using the graph.
0.32mins
Q4c

A promoter is holding a video dance. Tickets cost \$15 per person, and he has given away 10 free tickets to radio stations. Find how many people bought the ticket if he made \$600?

You may use the equation below.

 \displaystyle R = 15n - 150 

0.25mins
Q4d

Erin joins a CD club. The first 10 CDs are free, but after that she pays \$15.95 for each CD she orders. • Write an expression for the cost of x CDs. Buy to View 0.46mins Q6a Erin joins a CD club. The first 10 CDs are free, but after that she pays \$15.95 for each CD she orders.

• How much would she pay for 15 CDs?
0.15mins
Q6b

Erin joins a CD club. The first 10 CDs are free, but after that she pays \$15.95 for each CD she orders. It can be modelled by  \displaystyle Cost = 15.95x - 159.5  • Erin receives her first order of CDs with a bill for \$31.90. Create and solve an equation to determine how many she ordered.
0.37mins
Q6c

Solve the equation.

9x + 2 = 11x -10

0.19mins
Q7a

Solve the equation.

-\frac{4}{5}x + \frac{2}{3}= 1\frac{3}{4}x +2

1.24mins
Q7b

Solve the equation.

-3(x + 1) -2 = 4x - 5(x - 3)

0.41mins
Q7c

Solve the equation.

\dfrac{(4+x)}{3} +4 = \dfrac{x - 6}{2} - 6

1.10mins
Q7d

Determine the length of each base for the trapezoids below if they have the same area. 0.57mins
Q8

Is x = 3 the solution to 5(3x - 2) =4 -10(x + 1)? Explain how you know.

0.32mins
Q9

Solve each equation for the variable indicated.

P = 2l + 2w; l

0.27mins
Q10a

Solve each equation for the variable indicated.

A = P + Prt; t

0.31mins
Q10b

Solve each equation for the variable indicated.

V =\pi r^2h; h

0.35mins
Q10c

Solve each equation for the variable indicated.

A x + By = C; y

0.45mins
Q10d

For formula C =\frac{5}{9}(F- 32) is used to convert Fahrenheit temperatures to Celsius.

Determine the Celsius temperature when F = 90

0.24mins
Q11a

For formula C =\frac{5}{9}(F- 32) is used to convert Fahrenheit temperatures to Celsius.

Solve for F in terms of C.

0.31mins
Q11b

For formula C =\frac{5}{9}(F- 32) is used to convert Fahrenheit temperatures to Celsius.

Determine the Fahrenheit temperature when C = 25.

0.22mins
Q11c

Solve for y in terms of x.

8x - 4y =12

0.27mins
Q12a

Solve for y in terms of x.

5x = 10y - 20

0.31mins
Q12b

Solve for y in terms of x.

3x - 3y -9 = 0

0.31mins
Q12c

Solve for y in terms of x.

\frac{x}{4} + \frac{y}{2} =2

0.29mins
Q12d

Jose has \$32.00 in loonies and toonies. • Write a linear relation expressing the total amount of money in terms of the number of loonies and toonies.. Buy to View 0.52mins Q13a Jose has \$32.00 in loonies and toonies.

• Write an equation to express the number of toonies in terms of the number of loonies.
0.19mins
Q13b

Jose has \$32.00 in loonies and toonies. • Use your equation to determine which one of the following is a possible combination of coins Josh could have. Buy to View 1.03mins Q13c Jose has \$32.00 in loonies and toonies.

• Is it possible that Jose has 13 toonies and 5 loonies? Explain.
0.25mins
Q13d

Solve the equation 4 = -2x -3 byI graphing y = -2x -3 and y =4. The x-value where the two lines intersect is the solutions.

a) What is the solution to this equation based on the graph?

b) Verify the solution using algebra. 0.47mins
Q14ab

Solve the equation 4 = -2x -3 byI graphing y = -2x -3 and y =4. The x-value where the two lines intersect is the solutions.

How could you use this strategy to solve 3x -4 = 2x + 3? 1.01mins
Q14d

Solve each of the following systems of equations using a graph.

• 3x - 4y = -12 and 2x - 3y = 64
0.59mins
Q15c

Fitness centre A has a monthly membership fee of \$90. Members pay$5 to take an aerobics class. At Fitness centre B, there is no membership fee, but clients pay \$10 per class. a) Write a linear relation for the yearly cost in terms of the number of aerobics classes. b) Graph the equations on the same set of axes. c) State the point of intersection. d) What does the point of intersection mean in this case? e) How would you advise someone who is trying to choose between the two fitness clubs? Buy to View 0.00mins Q16 The Video Stream you can watch movies for \$ 3.00/month each and has no membership fee. At Rent Stream you can view movies for \$2/month but has a \$15 membership fee.

a) Write an equation for each situation.

b) Graph both equations on the same set of axes. Find the point of intersection.

c) What does the point of intersection mean in this case?

d) What advice would you give to someone who is deciding which video store to use?