From the activity we just did, which of the following do you think is important in decribing a line?
Let's see if your answer is correct.
Plot the equation
y= 3x + 1 in the graph below:
(You do this by simply typing in the equation in the box beside the graph.
Zoom in if required and find out the x intercept of the line.
Zoom in if required and find out the y intercept of the line.
Find the slope of the line.
If you do not know how to find the slope, watch this video.
Do you see the numbers you found above, in the equation y = 3x + 1?
What do you think 3 represents?
What do you think 1 represents?
In that case, what do x and y in the equation represent?
Verify your theory about slopes and intercepts occuring in an equation by using a new equation of your choice.
1. Plot the equation.
2. Find the slope and intercept.
3. Show how they appear in the equation.