Solving Linear Systems of Equations

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (0, 1)

How many solutions does this system of equations have?

• One Solution
• No solution
• Infinitely Many Solutions
• Two Solutions

Determine if (4, 1) is a solution for the system of equations.
y = -x + 5
y = 2x - 7

• yes
• no

The graphs of two linear equations are shown. What is the best estimate of the solution to the system of equations?

• (0, 2)

• (2, 0)

• (2, -2)

• (-2, -2)

• (-2, 2)

A 7-inch candle burns at a rate of 2-inches per hour. Which equation represents the relationship between y, the height of the dandle in inches, and x, the number of hours the candle burns?

• y=2x+7
• y=7-2x
• y=2-7x
• y=7x+2

Which of the following situations can be represented by y=10+0.55n

• The total cost at a store for one book that costs $10 and n bookmarks that cost $0.55 each.
• The total cost of 10 bags of chips that cost $0.55 each.
• The height of a tree after n day that was 10feet tall and it grew 55 feet a day.
• Not here

Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard. Write an equation in y = mx + b form for the total cost of x pounds of fruit from the orchard.

• y = 3x + 2.5
• y = 2.50x + 3
• y = 2.50x 
• y = 3x + 2.50

For lunch, Amanda had a hamburger and some potato chips. The hamburger totaled 325 calories and each chip had 12 calories. Write a liner equation to represent the situation.

• y = 12 + 325
• y = 12x  + 325
• y = 325 - 12x
• y = 325x + 12

What is the y-intercept in the equation?
y = 5x - 4

• 5
• -4
• -5
• 4

What is the slope in the equation?

y = 5x - 4

• 5

• -4

• -5

• 4