How do i do fractions and proportions?

Question: How do I do fractions and proportions?

To solve this proportion, you have to cross multiply, and to do fractions, make sure the bottom numbers (the denominators) are the same, and the top numbers (the numerators) put that answer over the denominator, and simplify if need be.

Hope this helps, have a good day. c;

You have to have both fractions next to each other.

Cross multiply (the top right number times the left bottom number) and the multiply the right bottom number times the left top number)

and see if they equal the same number if not than that is not proportional.

Step-by-step explanation:

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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

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5