Yes
On a number line, the positive numbers extend to the right of zero, and the negative numbers extend to the left of zero. So -3.4 is 3.4 to the left of zero.
120?
no but bar graphs do have to start at zero
positive numbers
Turn the fraction into a decimal and place it on the left side of zero where it fits.
Unless it is a direct proportion, the straight line does not have to start from zero.
There is no reason why any graph should start from any particular point.
It will be a horizontal line
A line on a graph with zero slope is a horizontalline.' Y ' is the same number at every point on the line.
A bar graph's data doesn't always start with zero but the scale on the y axis should. If you are not going to start the scale with zero then you have to put a squiggly line at the bottom to show that you skipped this space.
up and another number on the zero line
For motion at constant speed along a straight line, the acceleration is zero.
On a number line, the positive numbers extend to the right of zero, and the negative numbers extend to the left of zero. So -3.4 is 3.4 to the left of zero.
a horizontal line
That line is horizontal on the graph. Its slope is zero.
It is not possible to answer the questions since there is no such thing as a zero axis.
yes a graph has to start from a point 0.