AnswersHCISD-Mathematical Models with Applications B-CR SUMMEREquations of Proportional RelationshipsQuestion 1
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QuizMultiple Choice
Equations of Proportional Relationships
Question 1 • HCISD-Mathematical Models with Applications B-CR SUMMER
Joylin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. She knows that the total cost to download 3 videos was $12. Her work to find the equation is shown below.Joylin’s WorkStep 1Step 2 Where did Joylin make her first error?
Answer
A
Joylin divided 3 and 12 instead of multiplying the two numbers.B
Joylin computed the decimal equivalent of incorrectly.
C
Joylin used 0.25 as the coefficient of x instead of a product of x and y.D
Joylin switched the numerator and the denominator when she found k.