함수 전체 문제

Write an equation in slope-intercept form for the line shown.

Does the following table represent a linear function? If so, find the linear equation that models the data.

Does the following table represent a linear function? If so, find the linear equation that models the data.

On June 1^st, a company has $4,000,000 profit. If the company then loses 150,000 dollars per day thereafter in the month of June, what is the company’s profit n^th day after June 1^st?

For the following exercises, determine whether the lines given by the equations below are parallel, perpendicular, or neither parallel nor perpendicular:

$\begin{array}{c}2x-6y=12 \\ -x+3y=1\end{array}$

For the following exercises, determine whether the lines given by the equations below are parallel, perpendicular, or neither parallel nor perpendicular:

$\begin{array}{c}y=\frac{1}{3}x-2 \\ 3x+y=-9\end{array}$

For the following exercises, find the x- and y- intercepts of the given equation

$7x+9y=-63$

For the following exercises, find the x- and y- intercepts of the given equation

$f(x)=2x-1$

For the following exercises, use the descriptions of the pairs of lines to find the slopes of Line 1 and Line 2. Is each pair of lines parallel, perpendicular, or neither?

Line 1: Passes through $(5,11)$ and $(10,1)$

Line 2: Passes through $(-1,3)$ and $(-5,11)$

For the following exercises, use the descriptions of the pairs of lines to find the slopes of Line 1 and Line 2. Is each pair of lines parallel, perpendicular, or neither?

Line 1: Passes through $(8,-10)$ and $(0,-26)$

Line 2: Passes through $(2,5)$ and $(4,4)$

For the following exercises, use the descriptions of the pairs of lines to find the slopes of Line 1 and Line 2. Is each pair of lines parallel, perpendicular, or neither?

Write an equation for a line perpendicular to $f(x)=5x-1$ and passing through the point (5, 20).

For the following exercises, use the descriptions of the pairs of lines to find the slopes of Line 1 and Line 2. Is each pair of lines parallel, perpendicular, or neither?

Find the equation of a line with a y- intercept of $(0,2)$ and slope $-\frac{1}{2}.$

For the following exercises, use the descriptions of the pairs of lines to find the slopes of Line 1 and Line 2. Is each pair of lines parallel, perpendicular, or neither?

Sketch a graph of the linear function $f(t)=2t-5.$

For the following exercises, use the descriptions of the pairs of lines to find the slopes of Line 1 and Line 2. Is each pair of lines parallel, perpendicular, or neither?

Find the point of intersection for the 2 linear functions: $\begin{array}{c}x=y+6 \\ 2x-y=13\end{array}.$

For the following exercises, use the descriptions of the pairs of lines to find the slopes of Line 1 and Line 2. Is each pair of lines parallel, perpendicular, or neither?

A car rental company offers two plans for renting a car.

Plan A: 25 dollars per day and 10 cents per mile

Plan B: 50 dollars per day with free unlimited mileage

How many miles would you need to drive for plan B to save you money?

Find the area of a triangle bounded by the y axis, the line $f(x)=10-2x,$ and the line perpendicular to $f$ that passes through the origin.

A town’s population increases at a constant rate. In 2010 the population was 55,000. By 2012 the population had increased to 76,000. If this trend continues, predict the population in 2016.

The number of people afflicted with the common cold in the winter months dropped steadily by 50 each year since 2004 until 2010. In 2004, 875 people were inflicted.

Find the linear function that models the number of people afflicted with the common cold C as a function of the year, $t.$ When will no one be afflicted?

For the following exercises, use the graph in (the referenced figure) showing the profit, $y,$ in thousands of dollars, of a company in a given year, $x,$ where $x$ represents years since 1980.

$10,000 and ending at 2005 at$4,000. The x-axis ranges from 0 to 30 in intervals of 5 and the y –axis goes from 0 to 12,000 in intervals of 2,000." loading="lazy" decoding="async">

Find the linear function y, where y depends on $x,$ the number of years since 1980.

For the following exercises, use the graph in (the referenced figure) showing the profit, $y,$ in thousands of dollars, of a company in a given year, $x,$ where $x$ represents years since 1980.

$10,000 and ending at 2005 at$4,000. The x-axis ranges from 0 to 30 in intervals of 5 and the y –axis goes from 0 to 12,000 in intervals of 2,000." loading="lazy" decoding="async">

Find and interpret the y-intercept.