If k(x) = b^x and k(a) = 0.2 which option below gives the value of k(-3a)

K(a) = b^a = 0.2
k(-3a) = b^(-3a) = (b^a)^(-3)
  = 0.2^(-3)
k(-3a) = 125

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!