Barbie is analyzing a circle, y2 + x2 = 16, and a linear function g(x). Will they intersect?
2 answers:
Answer:
Yes,they will intersect at (0.686,3.941) and (2.914,-2.741)
Step-by-step explanation:
Given the values that represent the function g(x) you can plot them directly on a graph tool and plot the function y²+x²=16 then visualize
You can also determine the equation of the linear function as then graph both equations on the graph tool
<u>Finding gradient m</u>
Given (0,6) and (1,3)
m=change in value of y/change in value of x
Finding the equation of the linear function
Taking points (2,0) and (x,y)
From the graph,they intersect at
(0.686,3.941) and (2.914,-2.741)
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<u>Part (a)</u>
The variable y is the dependent variable and the variable x is the independent variable.
<u>Part (b)</u>
The cost of one ticket is $0.75. Therefore, the cost of 18 tickets will be:
dollars
Now, we know that Kendall spent her money only on ride tickets and fair admission and that she spent a total of $33.50.
Therefore, the price of the fair admission is: $33.50-$13.50=$20
If we use y to represent the total cost and x to represent the number of ride tickets, the linear equation that can be used to determine the cost for anyone who only pays for ride tickets and fair admission can be written as:
......Equation 1
<u>Part (c)</u>
The above equation is logical because, in general, the total cost of the rides will depend upon the number of ride tickets bought and that will be 0.75x. Now, even if one does not take any rides, that is when x=0, they still will have to pay for the fair admission, and thus their total cost, y=$20.
Likewise, any "additional" cost will depend upon the number of ride tickets bought as already suggested. Thus, the total cost will be the sum of the total ride ticket cost and the fixed fair admission cost. Thus, the above Equation 1 is the correct representative linear equation of the question given.