91Ó°ÊÓ

Write an equation of a line in slope-intercept form with the given slope and $y$-intercept. Then graph the equation.

Slope: 3, $y$-intercept: 5

Write an equation of the line with the given conditions.

$\left(2,1\right)$, slope 0.

An electrician charges a \(25 consultation fee plus \)35 per hour for labour.

a. Copy and complete the following table showing the charges for jobs that take 1, 2, 3, 4, or 5 hours.

b. Write an equation in slope-intercept form for the total cost of a job that takes$h$hours.

c. If the electrician bills in quarter hours, how much would it cost for a job that takes 3 hours 15 minutes to complete?

Write an equation of a line in slope-intercept form with the given slope and$y$-intercept. Then graph the equation.

Slope: $−\frac{5}{8}$, $y$-intercept:$−2$

The graph shows the relationship between outside temperature and daily ice cream cone sales. What type of correlation is shown.

F positive correlation.

G negative correlation.

H no correlation.

J not enough information.

Write the ordered pair for each point.

$E$

A popular pizza parlor charges \(12 for a large cheese pizza plus \)1.50 for each additional topping. Write an equation in slope intercept form for the total cost C of a pizza with t toppings.

1. $C=12t+1.50$
2. $C=13.50t$
3. $C=12+1.50t$
4. $C=1.50t−12$

Write an equation in slope-intercept form for the line that passes through the given point and is perpendicular to the graph of the equation.

$\left(−1,−4\right);−x−2y=0$

The table shows the number of sales made at an outerwear store during a sale. Write an equation of the regression line. Then estimate the daily sales on day 10 of the sale

The table shows ticket sales during the first week. Write an equation of the regression line. Then estimate the daily ticket sales on the 15^th day after the movie opens.