AnswersNC-Math 4 CRAdding and Subtracting Matrices

Applying Linear Functions Answers

10 verified answers
6

Lila wrote an equation of the cost for printing brochures, where x represents the number of brochures and y represents the total cost. The total cost for 35 brochures is $41.45. The total cost for 65 brochures is $55.55. Step 1: Write the ordered pairs and .Step 2: Find the slope. Step 3: Find the y-intercept to write the equation in slope intercept form. Which explains the error that Lila made?

Question illustration
A
Lila made in error in Step 1 by reversing the ordered pairs.
B
Lila made an error in Step 2 by not using the slope formula.
C
Lila made an error in Step 3 when she did not use the x- and y-coordinates from the same ordered pair.
D
Lila made an error in Step 3 when she did not use the distributive property correctly when multiplying.
7

The cost of a service call to fix a washing machine can be expressed by the linear function , where y represents the total cost and x represents the number of hours it takes to fix the machine. What does the y-intercept represent?

Question illustration
A
the cost for each hour it takes to repair the machine
B
the service fee for coming to look at the machine
C
the total cost for fixing the washing machine
D
the amount of time that it takes to arrive at the home to make the repairs

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