Question

Geraldo gets paid the same amount for each hour he works. The graph shows the amount he is paid, y, as it relates to the number of hours he works, x. Yesterday, when he worked 6 hours, he was paid $84.

Geraldo’s Earnings
On a coordinate plane, a graph titled Geraldo's Earnings has number of hours on the x-axis and wages in dollars on the y-axis. The line goes through points (0, 0) and (6, 84).


Which ordered pair could represent the number of hours and amount Geraldo is paid today at the same hourly wage?
(3, 42)
(4, 60)
(5, 62)
(8, 100)

Answer 1

Its A!

Explanation:

The unit rate is 14, and 14 times 3 is 42, so the answer is (3, 42)!

Answer 2

(3, $42)

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Explanation:

Geraldo gets paid the same hourly rate from day to day. This rate is the slope of the line representing his earnings. It is m = rise/run, which here is

m = $84/(6 hr), or m = $14/hr. Thus, the equation representing his earnings is y = ($14/hr)x.

The ordered pair (3, $42) satisfies this equation. None of the other three do.