Acircuit is built based on this circuit diagram. what is the equivalent resistance of the circuit? a. 0.61 b. 1.6 c. 7.5 d. 18

All the three resistors are in parallel because the current is getting divided in each branch.
Therefore the equivalent resistance is 
1/R = 1/3 + 1/6 + 1/9 = 11/18
Therefore, R = 18/11 = 1.6 ohms 

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.