Lesson 5.1
Which equation does not belong with the other three?
A) y=x-2 B) 4x+3=y C) y=x2+6 D) x+5=y
C) y=x2+6 Because of the exponent.
The total cost y (in dollars) to join a cheerleading team and attend x competitions is represented by the equation y=-250x+5000. Graph the linear equation.
You have $75 to spend. How many competitions can you attend
You can attend 2 cheerleading competitions!
Describe the translation of the point to its image.
(1,-4) --> (3,0)
2 units right and 4 units up
The equation y=20 represents the cost y (in dollars) for sending x text messages in a month. Graph the linear equation. What does the graph tell you about your texting plan?
It tells you its $20 no matter how many texts you send a month.
Your friend graphs the equation y=4 with a horizontal line on positive 4. Did your friend graph the line correctly with it being horizontal, or should they have graphed it vertical?
Yes, your friend was correct in graphing it horizontally on positive 4.
The amount y (in dollars) of money in your savings account after x months is represented by the equation y=12.5x+100. Graph the equation. How many months will it take you to save a total of $237.50
It will take you 11 months to save 237.50 dollars.
A game show contestant earns y dollars for completing a puzzle in x minutes. This situation is represented by the equation y=-250x+5000. How long did a contestant who earned $500 take to complete the puzzle?
18=x