Math 7 Plus Mid-Unit 7 Study Guide

Each triangle weighs 2 grams. Each circle weighs 5 grams. Each star weighs x grams.

Write an equation that represents the hanger diagram.

Mathematical Equivalence

ON

Each triangle weighs 2 grams. Each circle weighs 5 grams. Each star weighs x grams.

Write a different equation that represents the hanger diagram.

Mathematical Equivalence

ON

When seven is added to the number that is produced by doubling the number x, the result is equal to four times the number that is three more than x. Write an equation to represent the situation.

Mathematical Equivalence

ON

When seven is added to the number that is produced by doubling the number x, the result is equal to four times the number that is three more than x.

2x + 7 = 4(x + 3)

Find the value of x.

Don't write x=, just write the value.

Mathematical Equivalence

ON

Organize these options into the right categories.

Groups:

(a) No Solution

,

(b) One Solution

,

(c) Infinite Number of Solutions

• Equivalent coefficients, equivalent constants

• Different coefficients, equivalent constants

• Equivalent coefficients, different constants

• Different coefficients, different constants

1. Determine whether the equation has no solution, one solution, or infinite solutions.

• No solution

• One Solution

• Infinitely Many Solutions

1. Determine whether the equation has no solution, one solution, or infinite solutions.

• No solution

• One Solution

• Infinitely Many Solutions

1. Determine whether the equation has no solution, one solution, or infinite solutions.

• No solution

• One Solution

• Infinitely Many Solutions

1. Solve.

2. Only write the value of x; do not write x=

Mathematical Equivalence

ON

What value of x satisfies the equation?

Before you submit, check your answer by plugging your answer in for x in the original equation.

Write the value of x, do not write x=

Mathematical Equivalence

ON