KOLEKSI SIRI PERTAMA QUANTUM COOL-ACTIVE: MATHEMATICS SIMPLIFIED : FROM BASICS TO BRILLIANCE

KeypointsKeypoints NotesNotes

SummarySummary

LINEAR EQUATIONSLINEAR EQUATIONS

LINEAR EQUATION IN TWO VARIABLE

Other way to solve using GRAPHICAL METHOD

y + x = 4 ....(1)

y + 2 = x ....(2)

Step 1 : Express y in both equation

y = - x + 4 , y = x - 2

Step 2 : Find two points for equation (1) and

equation (2)

EQUATION 1 : When x = 0, y = - (0) + 4 , y = 4

ANSWER : (0,4)

When x = 4, y = - (4) + 4

y = 0 ANSWER : (4,0)

EQUATION 2 : When x = 0, y = - (0) + 4 , y = 4

ANSWER : (0,4)

When x = 1, y = - (1) + 4

y = 3 ANSWER : (1,3)

Step 3 : Plot the coordinates on the graph

Step 4 : Draw the line (connect all the points)

Step 5 : Find the intersection point which is the

solution for this simultaneous equation

STEP BY STEP

1 .Express y for both

equation

2. Find two points of

each equation

3. Plot the

coordinates on the

graph

4. Draw the line that

connect all the

coordinates

5. Find the

intersection point

which is the solution

TO USE GRAPHICAL METHOD :

It is express y, find points, plot coordinates, draw line and

find intersection point

SOLUTION of

the example