📈 GRAPHCALC AS SITUATING TOOL

 

In today's session we have learned on how to work with graphcalc. Graphcalc is an open-source computer program that turns in Microsoft Windows that provides the functionality of a graphing calculator.

Steps to use Graphcalc📈

1. Open Graphcalc

2. Click on graph 1

3. Choose 2D- graph

4. Click on equation 

5. Type equation and apply 

Case 1

Use graphcalc and generate a line of equation, when the equation is y=2x+1

Prediction: My prediction from this graph was I thought graph would go diagonally from right to left.

Observation: After plotting the graph with its equation, I came to observe that the line was indeed diagonal straight line which moved from top right to bottom left.

Case 2

y=-2x+1

y=-4x+1

y=-6x+1

Prediction: I assumed that the line would move  diagonally from left to right.

Observation: All the lines are move diagonally from top left to right.

Case 3

y=2x=1

Prediction: I assumed that the line would move diagonally from  right to left.

Observation: The line move parallel in x axis.

 

Case 4

y=2x+1

y=2x+2

y=2x+3

Prediction: I predicted that the line would move diagonally from  right to left.

 

Observation: The lines are move diagonally from right to left. All the line move across the x axis, but their the line move bigger and bigger when we increase the constant with same variable.

Case 5

y=2x-1

y=4x-1

Prediction: The line would move diagonally from  right to left since the variable value is positive.

 

Observation: The lines are move diagonally from right to left, and when the the variable are increase from 2 to 4 the line is move diagonally from right to left but the line is diminishing or decreasing.

Case 6

y=-2x-1

y=-4x-2

y=-6x-3

Prediction: I predicted that the line would move diagonally from left to right since the variable value is negative.

Observation: The lines are move diagonally from  left to right, and when the the variable are increase and also the value of constant increase, the line is move diagonally from right to left  with same point but the line is diminishing from earlier line.

Case 7

y=-2x+1

y=-4x-1

Prediction: The line would move diagonally from left to right since the variable value is negative.

Observation: The lines are move diagonally from  left to right and line coordinates change when the value of variable increase.

Case 8

solve the equation; y=(x+5)(x-1)

Prediction: I predicted that the line would move diagonally from right to left. 

 

Observation: After plotting the equation, the line forms U- shape. 

Case 9

y=x^2-2x+4

Prediction: I predicted that the line would move diagonally from left to right. 

 Observation: After plotting the equation, the line forms U- shape. 

After we are done with this activity, we also downloaded and used some math app to correct our answers.