One and Two Variable Equations

x - y + 4 = 0

• y = -x + 4

• y = 4x + 1

• y = 4x

• y = x + 4

The table shows solutions to one of the equations below. Choose the related equation.

• y = 3.5x

• y = x + 10

• y = 2x + 3

• y = 3x + 2

Four friends share dinner. They use a $12 off coupon, and share the remaining cost equally. The equation represents the total cost of dinner, d, in relation to the cost of dinner per person, C.

Which graph shows this equation?

(The independent variable, d, is along the x-axis.)

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Which point represents a solution to the equation below? y = 3x + 4

• ( 10 , 2 )

• ( 2 , 10 )

• ( 5 , 15 )

• ( 15 , 5 )

The equation d = 50t represents the average distance a car travels, d, related to time passed in hours, t.

If the car traveled 10 miles, how many hours did the car travel for?

• 5,000 hours

• 50 hours

• 2 hours

• 0.2 hours

The graph below represents the cost, y, based on the amount of cakes bought, x.

Which equation represents the situation?

• y = 20x

• y = 15x

• y = x

• y = 3/2 x

What is the value of a in the ratio table?

• a = 1.5

• a = 2

• a = 4.5

• a = 21

Which ordered pair is included in the graph of the equation below?

• ( 2 , 7 )

• ( 2, 13 )

• ( 2 , 10 )

• ( 7 , 2 )

The cost of a cheese pizza is $17.00, and each additional topping costs $2.00.

Which equation represents the total cost, C, of a cheese pizza with multiple toppings, t?

• C = 19t

• C = 17t + 2t

• C = 17 + 2t

• C = 17t + 2

An electrician charges $90 per hour plus a $50 travelling fee. Which equation represents the total cost of $340 for a repair by an electrician after x hours?

• 340 = 50 - 90x

• 340 = 90x + 50

• 340 = -50x + 90

• 340 = -90 - 50x