Given Triangle DEF has point D(-1,-5), E(-2,-1) and F(-4,-3) and is
1 answer:
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Answer:
Part 1) The equation is
Part 2) The number of hats Paula can knit is 42 per yard of yarn
Part 3) see the procedure
Part 4) For 378 yards of yarn Paula can knit 9 hats
Step-by-step explanation:
Let
h -----> the number of hats
y ----> the amount of yarn in yards
k ---> constant of proportionality
Part 1) Write an equation to represent the relationship between the numbers of yards of yarn Paula has and the number of hats she can knit
we know that
A relationship between two variables, h, and y, represent a proportional variation if it can be expressed in the form or
we have
substitute
Part 2) What does the constant if proportionality 42, represent in this problem?
The constant of proportionality represent the slope of the linear equation
The value of the slope is
That means that the number of hats Paula can knit is 42 per yard of yarn
Part 3) Complete the table showing the yards of yarn and the number of hats Paula can knit
we have
Part a) For y=0 yd Find the value of h
substitute in the linear equation the value of y and solve for h
Part b) For h=3 hats Find the value of y
substitute in the linear equation the value of h and solve for y
---->
Part c) For y=210 yd Find the value of h
substitute in the linear equation the value of y and solve for h
Part d) For y=378 yd Find the value of h
substitute in the linear equation the value of y and solve for h
Part 3) For h=11 hats Find the value of y
substitute in the linear equation the value of h and solve for y
Part 4) Interpret the meaning of the point (378,9)
we have that
y=378 yd
h=9 hats
That means -----> For 378 yards of yarn Paula can knit 9 hats