Question

1. An expression equated to another expression is called a/an ______.

a. Variable b. equation c. term d. zero

2. The generalization of he number pattern 2,4,6,8,- - - is ______.

a. n b. 2n c. 3nd. 4n

3. The equation x-1 =0 is true only when x is ______.

a. 1 b. -1 c. 0 d. 2

4. If a =6, Then 2a + 6 is ____________.

a. 6 b. 12 c. 18d. 24​

Answer 1

Answer:

1. b. equation

2. b. 2n

3. a. 1

4. c. 18

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Answer 2

1. An expression equated to another expression is called an (b) equation.

2. The generalization of he number pattern $2,4,6,8,- - -$ is (b) $2n$.

3. The equation $x-1 =0$ is true only when x is 1 .

4. If $a =6$, Then $2a + 6$ is 18.

Explanation:

1. An equation is any statement in which there are two expressions, one on each side of the equal sign.
2. Here, the pattern in increasing by the digit 2 or a multiple of 2. Hence, the generalization of the pattern can be $2n$ where n is any natural number.
3. For  $x-1 =0$, we take -1 to the right side where it becomes $x=1$. Hence, here is only 1 value of x which 1 itself.
4. In this question, we are given $a=6$, We have to put the value of $a=6$ in the expression $2a + 6$.

        ⇒ $2\times 6 +6$

        ⇒ $12+6$

        ⇒ $18$