y = mx + b, Any Form!!

Which graph below shows the equation y = -1/2x + 5

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Pierre sells homecoming mums for $10, plus an additional $.75 per decoration added. Which table shows the relationship between the total cost of the mum (C) and the number of decorations (d)?

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An electrician charges $25 to make a house call, plus $40 for every hour of work. Which equation shows how to find C, the total cost for having the electrician work for h hours?

• C = 25 + 40h

• C = 65 + h

• C = 65h

• C = 25h + 40

The graph shows the cost of a personal pizza (y) vs. the number of toppings (x). Which equation best describes the relationship?

• y = 2x

• y = 2x + 4

• y = 4x

• y = 2x + 2

Which table shows the relationship represented by the graph?

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