Slope
How to find slope.
What is rise/run?
Ax+B=C
What is A?
Coefficient
Amy is on a weight loss show. When the show began, she weighed 231 pounds. During the show, she lost 4 pounds per week. Which equation represents the amount of weight she lost?
y=-4x+231
A taxi charges $3, plus $1.50 for each mile traveled. Mr. Lewis rode in the taxi from his home to the airport and was charged $30. How many miles does Mr. Lewis live from the airport?
18 miles
x + 5 ≤ 13
X≤8
Rise=
ΔY
Ax+B=C
What is x?
Variable
Marcus has a landscape company where he spreads pinestraw. He charges a $20 delivery fee and $3.50 per bale of pinestraw. Which equation represents the amount of money that Marcus charges?
y=3.5x+20
What is the first step to solve this equation:
-3x + 11 = 44
Subtract 11 from both sides.
In an equation or inequality, you want to get the variable…
Isolated
Run=
ΔX
Ax+B=C
What is B?
Constant
Suppose that a bike rents for $4 plus $1.50 per hour. After how many hours will the bike rental cost a total of $10?
4 hours
Last Friday Trevon had $29. Over the weekend he received some money for cleaning the attic. He now has $41. How much money did he receive?
29+n=41
Will my dot be colored in?
5 ≥ x
Yes
Slope is…
The steepness of a line.
Subtracting a negative from a negative will result in what?
A positive number.
Bob has $150 in his savings account and saves $40 per month.
y=40x+150
The goal of solving two-step equations is to:
Find the value of the variable.
10 ≥ x - 3
X is less than or equal to 13
(6,3) (4,5)
Find the slope.
m = -1
2x+3=9
x=3
An internet company charges a $100 set up fee, and then they charge $35 a month after that. What is the rate of change?
$35
Write an equation:
Last week Julia ran 30 miles more than Larry. Julia ran 47 miles in total. How many miles did Larry run?
x+30=47
True or False?
x + 9 > 21, when x = 15
False