(-25) = (-5)-(-2)* 3 [(-5) * (-2)] - [6 * (-1)]
Answers
Answer:
Step-by-step explanation:
OBJECTIVE: To verify the conditions of consistency/ inconsistency for a pair of linear equations in two variables by graphical method.
MATERIAL REQUIRED: Graph papers, pencil, eraser, cardboard and glue.
METHOD OF CONSTRUCTION: 1. Take a pair of linear equations in two variables of the form a1 x + b1 y + c1 = 0 (1) a2 x + b2 y + c2 = 0 (2) where a1 , b1 , a2 , b2 , c1 and c2 are all real numbers; a1 , b1 , a2 and b2 are not simultaneously zero.
There may be three cases:
Case I : a 1 /a2 = b1 / b2
Case II: a 1 /a2 = b1 / b2 = c1/c2
Case III: a 1 /a2 = b1 / b2 = c1/c2
2. Obtain the ordered pairs satisfying the pair of linear equations (1) and (2) for each of the above cases. 3. Take a cardboard of a convenient size and paste a graph paper on it. Draw two perpendicular lines X′OX and YOY′ on the graph paper. Plot the points obtained in Step 2 on different Cartesian planes to obtain different graphs.
Topic 12
Linear equations in two variables
Enrichment Activity No.1
Month: April
Class
X
Subject
Mathematics
Name
Date : 30.04.21