Linear Expressions

Q.

The cost of one food packet is ₹ 45 with a fixed delivery charge of ₹10 . The total cost for y number of food packets is given by :

a) 45 + 10y

b) 45 + 10 + y

c) 45y + 10

d) 45 - 10y

1. c)

2. d)

3. b)

4. a)

Q. Autos in Bangalore have a fixed charge of ₹25 for first 2 km and a variable charge of ₹13 per additional km. If $x$ represents the total distance travelled, then what is the expression for the total charge?

1. ₹(13$x$ + 1)
2. ₹(13$x$ - 1)
3. ₹(25+13$x$)
4. ₹$13x$

Q. Identify a linear expression from the following.

1. 4z+7 = 9
2. 3y+2
3. $x^2$+ 9
4. x = 9

Q. Arrange the equations in descending order (starting from the top) based on the values of x obtained.

1. 4x+15 = 20+3x
2. 2x+7 = 10+x
3. 2x+3 = 4+x
4. 5x+2 = 10+4x

Q. An algebraic expression is a combination of variables and constants connected with a mathematical operator.

1. True
2. False

Q. ax + b = c is the general form of a linear where a, b and c are numbers.

1. integral
2. whole
3. real
4. natural

Q.

If 5 is added to three times the product of two numbers $m$ and $n$, then the expression will be _______.

1. $5+mn$

2. $5+3mn$

3. $m+3n+5$

4. $(mn+5)\times 3$