Systems of Equations/Inequalities

What is the solution to this system?

• (1, -1)

• (-1, 1)

• (0, -2)

• (2, 0)

How many solutions will this system have? 

• No solution

• One Solution

• I Don't Know

• Infinitely Many Solutions

Using elimination: WHAT IS THE "X" VALUE OF THE SYSTEM?

Remember you are looking for Matching Opposites/You are always adding! Hint: You will have to multiply on this one in order to eliminate.

4x - 6y = -6

-2x - 12y = -12

• x = 0

• y = 1

• x = -1

• y = 0

Select the ALL the systems that have the same solution as the following system below.

-6x + 5y=1

6x + 4y=-10

• -12x + 10y = 2

  6x + 4y = -10

• -30x -30y = 30

  40x + 5y = 10

• 6x + 6y = -1

  6x + 4y = 10

• -6x + 5y = 1

  18x + 12y = -30

The two types of tickets sold at a baseball game are standard tickets and discounted tickets. The price of a discounted ticket was 80% of the price of a standard ticket. There were 153 standard tickets sold at the baseball game. There were 47 discounted tickets sold at the baseball game. The total amount of tickets sales from the standard and discounted tickets was $2,649.34. The line graphed on the grid represents the first equation in a system of linear equations for this situation. If the second equation in the system is y = 0.80x, what is the best estimate of the price of a discounted ticket?

• $13.95

• $14.55

• $13.25

• $11.15

• $13.95

• $14.55

• $13.25

• $11.15

Answer explanation

DESMOS

Find 2 good points on a graph and put them in a table.

Use y1~mx1+b to graph the line in the given graph.

Graph the given equation.

Find where they cross.

Look at the axis, the discounted ticket is on the y-axis

Tags

A.3(G)

A city bus collected $1,140 in fares on a given day. The regular fare is $1.50, and the reduced fare is $0.75. If 1,042 total fares were paid, which system of linear equations can be used to find x, the number of regular fares paid, and y, the number of reduced fares paid?

• A

• B

• C

• D

Which system of equations is best represented by lines h and j?

• 
• 
• 
• 

The two types of tickets sold at a baseball game are standard tickets and discounted tickets. The price of a discounted ticket was 80% of the price of a standard ticket. If the second equation in the system is y = 0.80x, what is the best estimate of the price of a discounted ticket?

• $13.95

• $14.55

• $13.25

• $11.15

• (1,3)

• (2,1)

• (3,4)

• (6,2)