91影视

In the following exercises, determine the most convenient method to graph each line.

$x-y=2$

In the following exercises, determine the most convenient method to graph each line.

$y=x+2$

In the following exercises, determine the most convenient method to graph each line.

$y=\frac{3}{4}x-1$

In the following exercises, graph by plotting points.

$y=x-3$

Katherine is a private chef. The equation $C=6.5m+42$models the relation between her weekly cost, C, in dollars and the number of meals, m, that she serves.

鈸� Find Katherine鈥檚 cost for a week when she serves no meals.

鈸� Find the cost for a week when she serves 14 meals.

鈸� Interpret the slope and C-intercept of the equation.

鈸� Graph the equation.

Marjorie teaches piano. The equation $P=35h-250$
P models the relation between her weekly profit, P, in dollars and the number of student lessons, s, that she teaches.

鈸� Find Marjorie鈥檚 profit for a week when she teaches no student lessons.

鈸� Find the profit for a week when she teaches $20$student lessons.

鈸� Interpret the slope and P鈥搃ntercept of the equation.

鈸� Graph the equation.

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

$4x-3y=-1;y=\frac{4}{3}x-3$

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

$2x-y=8;x-2y=4$

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

$y=5x-1;10x+2y=0$

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

$3x-2y=5;2x+3y=6$