Question

"1) In math when lines are going up the graph it is called?

2) in math, when lines are going down a graph it is called?
3) In math what numbers means nothing or has no value?
4) As riders go straight up or straight down a crazy coaster, it is hard to describe. What word means hard to define?"

Answer 1

In mathematics, lines going up the graph are called positive slope, lines going down are called negative slope, zero means nothing or has no value in math, and the word for hard to define is indefinable.

Step-by-step explanation:

In mathematics, when lines are going up the graph, it is called a positive slope. This means that as the x-values increase, the y-values also increase. For example, if you have a line that goes up from left to right, it has a positive slope.

When lines are going down the graph, it is called a negative slope. This means that as the x-values increase, the y-values decrease. For example, if you have a line that goes down from left to right, it has a negative slope.

In mathematics, the numbers that mean nothing or have no value are called zero. Zero is neither positive nor negative and has no numerical value.

The word that means hard to define is indefinable. When something is hard to describe or define, it is referred to as indefinable.