Given that g = a/b find the percentage decrease in the value of g when a decreases by 10% and b decreases by 20%

g increases by 12.5%

Step-by-step explanation:

When a decrease in value by 10%, we have;

a- (10/100 * a) = a- 0.1a = 0.9a

b decreasing by 20%; we have

b - (20/100 * b) = b-0.2b = 0.8b

so we have the new value of g as;

0.9a/0.8b = 1.125b

‘Now, the difference this has with b is;

1.125b-b = 0.125

In percentage, we have this as 0.125 * 100 = 12.5%

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explanation

the graph has a slope of 1/3 because each time you move up 1, you go to the right 3. so, slope = rise/run = 1/3. we can cross choice a off the list since we want a slope of 3, rather than 1/3.

the first table shown has a slope of -3. this is because the rise is -6 and the run is 2, so slope = rise/run = -6/2 = -3. note how x increases by 2 each time (run) and y drops by 6 each time (rise). choice b can be eliminated.

the second table has a slope of 3. each time x goes up by 1, the y values increase by 3. slope = rise/run = 3/1 = 3. alternatively you can use the slope formula to prove that the slope is 3 here. use any two rows of values to generate the two points. choice c is one of the answers

the third table also has a slope of 3. let's use the slope formula to prove as such. i'm going to use the first two rows of the table. so i'll use the two points (2,1) and (5,10)

m = slope

m = (y2-y1)/(x2-x1)

m = (10-1)/(5-2)

m = 9/3

m = 3 so we get a slope of 3

choice d is the other answer

the answer is c. 23/3