Writing Equations
The sum of a number x and 4 equals 12
x + 4 = 12
y - 7 = 3
y = 10
A number k is less than 10
k < 10
5 + h > 7
h > 2
x > 3
Graph
A number w divided by 5 is 6.
w / 5 = 6
p + 5 = 8
p = 3
A number a is more than 6.
a > 6
y - 21 < 85
y < 106
b <= 4
Graph
9 less than a number n equals 27.
n - 9 = 27
4y = 40
y = 10
A number b is at least -3
b >= -3
7p <= 42
p <= 6
y - 3 < 6
y < 9 then graph
A cheese pizza costs $5. Additional toppings cost $1.50 each. Write an equation in TWO VARIABLES that represents the total cost of a pizza.
5 + 1.5t = c
t / 5 = 6
t = 30
A number x is no more than 7.
x <= 7
t / 3 >= 15
t >= 45
8n >= 40
n >= 5 then graph
It costs $35 to join a gym. The monthly fee is $25. Write an equation in TWO VARIABLES that represents the cost of a gym membership.
35 + 25m = c
Tell whether the given value is a solution of the equation.
19 - g = 7 ; g = 15
Not a solution
Tell whether the given value is a solution of the inequality.
3z > 6 ; z = 3
Yes, it is a solution
Write the word sentence as an inequality, then solve.
Eight times a number n is less than 72.
8n < 72
n < 9
Write the word sentence as an inequality, then solve AND graph.
Five more than a number x is less than 17.
x + 5 < 17
x < 12 then graph