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Envision Math 2.0: Grade 6, Volume 1

EM

Envision Math 2.0: Grade 6, Volume 1 View details

Review

Exercise 1 Page 246

Substitute each value of d one at a time into the equation to verify if it is true or false.

d=16

Practice makes perfect

We want to verify if any of the given values of d are solutions of this equation. We will replace the variable with each value from the set and check if the equation is true for any of them.

d	d+9=25	Simplify	True or False?
6	6+9? =25	15 ≠ 25	False
14	14+9? =25	23 ≠ 25	False
16	16+9? =25	25 = 25	True
21	21+9? =25	30 ≠ 25	False

The equation is true when d=16. This means that d=16 is the only solution to the equation out of the given values.

Subchapter links

Topic Essential Question p.245

Vocabulary Review p.245

Use Vocabulary in Writing p.245

1 Understand Equations and Solutions p.246

2 Apply Properties of Equality p.246

3-4 Write and Solve Addition, Subtraction, Multiplication, and Division Equations p.247

5 Write and Solve Equations with Rational Numbers p.247

6 Understand and Write Inequalities p.248

7 Solve Inequalities p.248

8 Understand Dependent and Independent Variables p.249

9 Use Patterns to Write and Solve Equations p.249

10 Relate Tables, Graphs, and Equations p.250