linear equations
one, none, infinite solutions (+/-/0)
substitution OR elimination
proportions
graph/scatter plot
100
What is the slope intercept form? Label each part
y=mx+b
x & y = variable
m = slope
b = y intercept
100
2x=2x
positive, negative or 0?
infinite solutions
x can be positive, negative or 0
100
When do you use substitution/elimination?
when solving system of equations
100
Sam used 6 loaves of elf bread on an 8 day hiking trip. He wants know how many loaves of elf bread (b) he should pack for a 12 day hiking if he eats the same amount of bread each day.
How many loaves of elf bread should Sam pack for a 12 day trip?
9 loaves
100
How many quadrants are there, name them?
4 Quadrants;
I quadrant (+,+)
II quadrant (-,+)
III quadrant (-,-)
IV quadrant (+,-)
200
What is the slope of a line containing these points: (9,3); (17,8)
5/12
200
10x+3-4x=-2x+4x+3
zero solution
200
Solve:
7x - y = -3
x − y = 3
(-1, -4)
200
Rachel earned $34 in 4 hours at her job today. She wants to know how much she could earn (e) tomorrow if she works 10 hours at the same hourly rate.
How much will Rachel earn in 10 hours?
$85
200
Define outlier and graph an example that has an outlier
Outlier is a point that is outside the general trend.
Answers may vary
300
Find slope using points (1,3) & (3,1)
m = -1
300
5z+7=3
one solution; z= -4/5
negative solution
300
Solve:
y = x + 2
x= -3
(-3, -1)
300
Liliana used 4 dark power crystals to raise 14 zombie soldiers. She wants to know how many zombie soldiers (z) she can raise with 10 dark power crystals.
How many zombie soldiers can Liliana raise with 10 power crystals?
35 zombie soldiers
300
Name the term used to describe the relationship shown on a scatterplot.
correlation
400
Write the equation for the line graphed below.
y = 1/2x - 2
400
5(x+4)+22=12+12(x+2)
one solution; x = 6/7
variable is positive
400
y= -2x + 4
3x + 2y = 1
x=7, y=-10
400
Donovan is painting a mural. He uses 20mL of paint for every 500ft2 he covers. The wall is 3250ft2 of surface area. If Donovan's mural covers the entire wall, how much paint will he need in total?
130mL
400
When graphing/creating a scatter plot, what type of variable goes on the x-axis?
independent variable
500
A city parking garage charges a flat rate of $3.00 for parking 2 hours or less, and $0.50 per hour for each additional hour. Write a linear model that gives the total charge in terms of additional hours parked.
y=0.50x+3
500
11+4(3-2x)+3=14+2(6-4x)
infinite solutions
variable can be positive, negative, or 0
500
5x-3y=1
6x+3y= -12
x=-1; y=-2
500
Russel needs a 70% on his final exam to get an A in his math class. After taking the exam, Russel sees he got 32 out of 48 correctly. Did Russel finish math class with an A? How many points away over/under 70% was his score?
No, he did not finish math class with an A. He was 1.6 points under the requirement.
500
When drawing a line of best fit, you want to have a similar______ __ _______ on each side. You also want the points to be ________ ________ above and below the line.
amount of points; similar distances (semantics may vary)