Question from Nathan:
Lesson 5 Chapter 2 page 93 number 7. I do not understand the answer to a and b and my mom cannot explain it to me. Difference to me is subtraction not multiplication and the answer said it is the difference between successive values of Y on a.
Answer from Cassidy Cash:
Yes, “difference” does mean subtraction. Notice that all of the y values are 3 more than the one before.
8-5 = 3
11-8 = 3
14-11 = 3
And it would be that way on throughout the table, were you to extend the x values past three. That is what it means by “the difference between successive values of y”, meaning that if you take each y value and subtract it from the y-value following it, then you will get 3.
Letter b is very very basic, in that it just wants you to recognize that the 5 is paired up with the 0. It is teaching you to understand that the y-values are determined by whatever the x value was for that point. Since x was zero, y was 5. That is all it is asking for that one.
Does this help? God Bless, Cassidy Cash