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Finding the Intercepts of a Parabola
The intercepts of a parabola with equation are located by exploiting the defining property of each axis crossing — one coordinate is always zero at the point where the curve meets an axis.
- To find the y-intercept, substitute into the equation and solve for . The result is an ordered pair of the form .
- To find the x-intercepts, substitute into the equation and solve the resulting quadratic equation for . The solutions give ordered pairs of the form .
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Finding the Intercepts of
Finding the Intercepts of
Finding the Intercepts of a Parabola
A logistics company uses the linear equation y = 500 - 20x to model the remaining balance (y) of a prepaid shipping account after x number of packages are sent. To find the x-intercept, which represents the total number of packages that can be sent before the balance reaches zero, which algebraic step must be performed?
A logistics company uses the linear equation y = 500 - 20x to model the remaining balance (y) of a prepaid shipping account after x number of packages are sent. To find the x-intercept, which represents the total number of packages that can be sent before the balance reaches zero, which algebraic step must be performed?
A project manager uses a linear equation to track the remaining budget for a corporate initiative. To find the x-intercept (the point in time when the budget is completely spent), arrange the following algebraic steps in the correct order.
In professional finance, identifying a project's starting cost or its break-even point often involves finding the intercepts of a linear model. Match each intercept goal with the correct algebraic procedure or ordered pair format.
To determine the x-intercept of a linear equation used to model when a corporate project's budget will be fully exhausted, an analyst must substitute 0 for the variable y and solve the equation for x.
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An operations manager uses a linear equation to predict when a storage tank will be empty. To find the x-intercept, which represents the time when the remaining volume () reaches zero, the manager must substitute the value ____ for the variable in the equation.
Standard Operating Procedure for Finding Intercepts
A corporate consultant uses a linear equation to model the total cost () of a service contract based on the number of hours worked (). The y-intercept represents the initial setup fee. Arrange the following steps in the correct algebraic order to find this y-intercept.
Finding the Intercepts of
Finding the Intercepts of
Finding the Intercepts of
Graphing a Line Using the Intercept Method
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Finding the Intercepts of
Finding the Intercepts of
Graphing
Finding the Intercepts of
Finding the Intercepts of
Finding the Intercepts of
Finding the Intercepts of
Finding the Intercepts of
Finding the Intercepts of
Finding the Intercepts of
Finding the Intercepts of
A logistics manager uses a quadratic function to model the fuel efficiency of a delivery fleet based on speed. To find the 'zero-efficiency' points where the graph crosses the horizontal axis (the x-intercepts), which algebraic step is required?
A landscape architect uses a quadratic equation to model the path of water from a fountain. Match the type of intercept the architect needs to find with the correct algebraic procedure.
A small business owner uses a quadratic equation to model the daily operating costs of a new storefront. To find the y-intercept, which represents the fixed costs on day zero, the owner should substitute 0 for y and solve the equation for x.
A marketing specialist is analyzing a campaign's effectiveness using a parabolic model . To find the points where the effectiveness is zero (the x-intercepts), the specialist follows a standard algebraic procedure. Arrange the following steps in the correct order.
Calculating X-Intercepts for a Parabolic Model
A small business owner uses a quadratic model to predict the monthly profit () based on the number of years in operation (). To find the 'starting profit' on the day the business opened (the y-intercept), the owner must substitute the value ____ for the variable .
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A structural engineer is analyzing a parabolic bridge arch modeled by the equation . When identifying the x-intercepts (the points where the arch meets the horizontal foundation), which coordinate must always be equal to zero at those points?
A human resources manager uses a parabolic function to model the number of employee departures at a new branch over time. If the manager determines that the y-intercept of this model is 12, which ordered pair correctly identifies this point on a coordinate graph?