Test on Writing Equation of Linear Equation

A plumber charges $25 for a service call plus $50 per hour of service. What information is given and what equation should you use?

• A slope and a y - intercept are given; use y = mx + b.

• A slope and a y - intercept are given; use y - y1 = m(x - x1).

• Two points are given; use y - y1 = m(x - x1).

• Two different items that add to a total are given; use Ax + By = C

When 4 people attend the movie theater, it costs $23.96. When 7 people attend the movie theater, it costs $41.93. What information is given and which equation should you use?

• A slope and y - intercept are given, use y = mx + b.

• A slope and y - intercept are given, use y - y1 = m(x - x1).

• Two points are given; use y - y1 = m(x - x1).

• Two different items that add to a total are given; use Ax + By = C.

You and your friends go to the movies and purchase some popcorn and Pepsi. Popcorn is sold for $4.99 per bag and Pepsi is sold for $1.99 per bottle. You each chip in to pay $24.92. Write an equation to represent the given situation.

• y = 1.99x + 4.99

• y = 4.99x + 24.92

• y - 1.99 = 4.99(x - 24.92)

• 1.99x + 4.99y = 24.92

A caterer charges $100 to cater a party for 10 people and $175 for 25 people. Write an equation for the given situation.

• y = 25x + 100

• y - 100 = 5(x - 10)

• y - 175 = 10(x - 25)

• 100x + 175y = 35

Given the table, write the equation in the slope-intercept form.

Tags

8.5.I

Which equation best represents the relationship between x and y in the table shown?

Tags

8.5.I

Which equation best represents the relationship shown in the graph?

Tags

8.5.I

Which function is best represented by this graph?

Tags

8.5.I

Which function is best represented by this graph?

Tags

8.5.I

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

Tags

8.5.I