Expressions and Equations
Slope
Systems of Linear Equations
Functions
Coronavirus Facts
100
Solve for x
2x+3=5x-9
Work:
3=3x-9
12=3x
x=4
Answer: What is x=4
100
Which of the following equations is in slope-intercept form?
3x-2y=7
20=y+4x
20+3y=2x
y=3x+398
Work:
Slope-intercept: y=mx+b
4: y=mx+b
Answer: What is 4
100
Examine the graph and determine the system of the two lines.
Work: Lines meet at (-1,-7)
Answer: What is (-1,-7)
100
Is the following chart a function? Explain why or why not.
What is yes, although the y coordinate is the same number as the x coordinate, it is still a function because there is only one y coordinate for every x coordinate.
100
True or False - Children under the age of 3 are unable to get Covid-19
What is False
200
Simplify through distribution
6(2x+11)
What is 12x+66
200
Figure out the slope after putting the equation in slope-intercept form
24x+4y=16
Work:
4y=-24x+16
y=-6x+4
Slope=-6
Answer: What is Equation: y=-6x+4, Slope: -6
200
Solve the system
y=3x+5
y=5x-3
Work:
3x+5=5x-3
5=2x-3
8=2x
x=4
3(4)+5=17
5(4)-3=17
y=17
Answer: What is (4,17)
200
Which of the following represents a function?
Work:
d=one y value per x value
Answer: What is d
200
How many times should you sing Happy Birthday while you are washing your hands to make sure you get off as many germs as you can?
What is 2 times
300
Solve for y if x=-2
y = 14x + 16
Work:
14(-2)=-28
-28+16=-12
y=-12
Answer: What is y=-12
300
Figure out the slope of the graph with the given points. (Hint: two points are (0,2) and (2,5))
Work:
Growth triangle=1.5/1=1.5
Answer: What is Slope=1.5
300
Solve the system.
y=6x-2
y=7x+5
Work:
6x-2=7x+5
-x-2=5
-x=7
x=-7
6(-7)-2=-44
7(-7)+5=-44
y=-44
Answer: What is (-7,-44)
300
Functions
Is the following chart a function? Explain why or why not.
What is yes, because there is only one y coordinate for every x coordinate.
300
Should you ingest or inject any disinfects into your body to prevent yourself from getting Coronavirus? Explain why or why not.
What is NO, because there is a very high chance of you dying and it will not help at all.
400
Solve for x
55=14x+3-12x
Work:
52=14x-12x
52=2x
x=26
Answer: What is x=26
400
Figure out the slope of the graph with the given points. (Hint: two points are (0,0) and (2,6))
Work:
Growth triangle = 3/1= 3
Answer: What is Slope = 3
400
Solve the system
y=3x+4
10=-2x-3y
Work:
10=-2x-3(3x+4)
10=-2x-9x-12
10=-11x-12
22=-11x
x=-2
3(-2)+4=-2
y=-2
-2(-2)-3(-2)=10
Answer: What is (-2,-2)
400
Which of the following does not represent a function?
(Sorry, you just have to look at it sideways since I cannot turn it)
Work:
C=Multiple y values per x value
Answer: What is C
400
Name three symptoms of Covid-19.
What is (Examples) Cough, shortness of breath, and fever
500
Expressions and Equations
John and Steve both work at Costco. Since John has worked at Costco a lot longer, he gets paid more than Steve. If John's hourly wage is 2 more than 2 times Steve’s hourly wage, and Steve makes 9 dollars an hour, how much do they make all together in 8 hours?
Work:
y=2(x)+2
y=2(9)+2
y=20
John=$20
Steve=$9
20+9=29
29 x 8= 232
Answer: What is $232.
500
A candy shop sells lollipops for $18.00 each and an additional $2.00 for every lick of the lollipop (not the best deal!). Marcus buys one lollipop, and when he finishes it, he has to pay $150.00 total. How many times did Marcus lick his lollipop?
Work:
y=2x+18
y=$150
150=2x+18
132=2x
x=66
Answer: What is 66 times
500
Solve the system
y=7x-3
y=5x+21
Work:
7x-3=5x+21
2x-3=21
2x=24
x=12
7(12)-3=81
5(12)+21=81
y=81
Answer: What is (12, 81)
500
Is the following equation a linear function? Explain why or why not.
2x2+ 2y2= 10
What is no, because when you graph it, it is a circle, which means when you do the vertical line test, two points will meet at the same time. This means that there are multiple y values per x value.
500
Name 5 ways Coronavirus can spread from person to person.
What is (Examples)- Coughing, breathing, talking, sneezing, or touching an object that someone else has touched with Coronavirus (if the virus has not died yet on the object)