Solve Equations
x / 20 = 120
x = 2,400
Up to 5 people, p, visited Mary today.
p <= 5
p is less than or equal to 5
Open circle on 10; going to the left
x < 10
The distance traveled, d, and the speed, s
DV: d
IV: s
Find the pattern and write an equation:
x y
0 0
2. 1
10 5
16. 8
y = 0.5x or y = x / 2 or x= 2y
2,448 / 48 = x
x = 51
The value, v, of the hat is less than $9
v < 9
Open circle on 5; going to the right
x > 5
The calories, c, in a snack and the amount of the snack, a.
DV: c
IV: a
Write an Equation:
x y
1 7
2 13
3 19
4 25
y = 6x + 1
x / 15 = 8 (1/3)
x = 125
The number of guests, g, coming for dinner is not 8
g does not equal 8
Closed circle on 3; going to the right
x >= 3
x is greater than or equal to 3
The amount of money you have spent, s, and how much money you have left, m.
DV: m
IV: s
Write an equation:
x y
1.50 2.50
2. 3
3. 4
y = x + 1
14x = 73.5
x = 5.25
The distance of the race, d, is at least 6 miles
d > = 6
d is greater than or equal to 6
Closed circle on 7; going to the left
x <= 7
x is less than or equal to 7
The number of apple slices remaining, r, and the number of apple slices eaten, e
DV: r
IV: e
Write an Equation:
x. y
1. 6
2. 12
3. 18
y = 6x or x = y/6
Tomas buys a bag of 5 peaches for $3.55. Write and solve an equation to find how much money, m, Tomas paid for each peach. (whiteboard)
5m = 3.55
m = $0.71
The time it takes to get to Grandma's house, t, is longer than 2 hours.
t > 2
Open circle on 21; going to the left
x < 21
The Spirit Squad is washing cars. The equation m=2c represents the money they make, m, for washing cars. c is the amount of cars they make. Identify the IV and DV
DV: m
IV: c
Write an equation:
x. y
3. 12
4. 16
5. 20
6. 24
y = 4x or x = y/4