Quintin stopped and bought 16.9 gallons of gas at a rate of $3.75 per gallon. How much did Quintin pay for the gas?
1 answer:
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Answer:
x = - 16
Step-by-step explanation:
The equation relating two proportional quantities is
y = kx ← k is the constant of proportionality
To find k use the condition when y = 1, x = - 4
k = = -
y = - x ← equation of proportionality
when y = 4, then
4 = - x (multiply both sides by - 4 )
x = - 16