Day 4: define Y intercept and "real world meaning"

Entry 4
Define the "Y" intercept


The y intercept is where the the line of the equation crosses the y axis.

As you can see, the Y intercept is the point at (0,0). Basically saying, in real life, the Y intercept in this meaning would mean, if you didnt do your homework, then, you get a 0 on your math test. And if you increase the Y intercept, it means that's your test score, based on the amount of homework that's been completed.




Know that you know the dictionary definition of the Y intercept, lets practice. Here are a few graphs.

Use the Red line only













ANSWERS:
Graph 1: The Y intercept is (0,3)
Graph 2: The Y intercept is (0,18)
Graph 3: They Y intercept is (0,1)