Will mark brainliest as soon it let's me.)a family is tracking its spending habits. over the past year, the grocery bill has ranged from $110 to $170. suppose you were going to plot these points on a coordinate grid. a) what is a good scale to use for the y-axis? explain your reasoning. b) what is a good interval to use for the y-axis? explain your reasoning.

A) A good scale is for one square to equal 5. The graph would be less than 15 squares high if starting from $100.

B) A good interval to use for the y-axis is 5, starting from 100. 110 and 170 are both multiples of 5. The range of the data is 60 so we are dealing with a fairly small range which allows for a smaller interval. A graph using 5 as the interval would be more specific than 10.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0