함수 전체 문제

Costa is planning a lunch banquet. The equation $C=450+28g$ models the relation between the cost in dollars, C, of the banquet and the number of guests, g.

• ⓐ Find the cost if the number of guests is 40.
• ⓑ Find the cost if the number of guests is 80.
• ⓒ Interpret the slope and C-intercept of the equation.
• ⓓ Graph the equation.

Margie is planning a dinner banquet. The equation $C=750+42g$ models the relation between the cost in dollars, C of the banquet and the number of guests, g.

• ⓐ Find the cost if the number of guests is 50.
• ⓑ Find the cost if the number of guests is 100.
• ⓒ Interpret the slope and C–intercept of the equation.
• ⓓ Graph the equation.

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$y=\frac{3}{4}x-3;\,3x-4y=-2$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$y=\frac{2}{3}x-1;\,2x-3y=-2$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$2x-5y=-3;\,y=\frac{2}{5}x+1\,$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$3x-4y=-2;\,y=\frac{3}{4}x-3\,$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$2x-4y=6;\,x-2y=3$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$6x-3y=9;\,2x-y=3$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$4x+2y=6;\,6x+3y=3$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$8x+6y=6;\,12x+9y=12$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$x=5;\,x=-6$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$x=7;\,x=-8$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$x=-4;\,x=-1$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$x=-3;\,x=-2$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$y=2;\,y=6$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$y=5;\,y=1$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$y=-4;\,y=3$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$y=-1;\,y=2$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$x-y=2;\,2x-2y=4$

Use Slopes to Identify Parallel Lines

In the following exercises, use slopes and y-intercepts to determine if the lines are parallel.

$4x+4y=8;\,x+y=2$