A reflection uses _______ to create a mirror image of the original figure.

A translation moves every point of a figure

Consider a transformation △ 𝑋𝑌𝑍 →△ 𝐵𝐶𝐷. Understand the order and answer the following questions.
i) What is △ 𝐵𝐶𝐷 called?
ii) What is the relation between the vertices 𝑋, 𝑌, 𝑍 and 𝐵, 𝐶, 𝐷 ?

Solve: x + 2y = 16 , 3x - 4y + 12 = 0 by using substitution method.

Solve:  and 

Solve the pair of linear equations, Also find p if p = 2x + 3

Solve:  by using substitution method.

Solve: 3x + y = 8; 5x + y = 10 by using elimination method.

Solve  and  by using elimination method.

Solve by using elimination method: 

Solve by using elimination method. .

Solve the following equation by balancing on both sides: b) 6n+7= 3n+25

Solve the following equation by balancing on both sides: a) 5m+9 = 4m + 23

Solve: 

Which of the following could be the x-coordinate of a solution to the system of equations above?

Note:
If we had to find the y-coordinate of the system of equations, then we put this value of x in the equation  to get the value of y. Here, we got a quadratic equation of x, which did not have any term containing x, so it was easier to solve. If the quadratic equation was of the form  , then we would use the quadratic formula   to solve the equation.

Solve the equation and check your result 6(3m + 2) – 2(6m – 1) = 3(m – 8) – 6(7m – 6) +9m