Do the ratios 5:10 and 1:2 form a proportion? yes no

Me. i can't figure out this question. give an explanation too. .

Acaterpillar eats 1400\%1400% of its birth mass in one day. the caterpillar's birth mass is mm grams. which of the following expressions could represent the amount, in grams, the caterpillar eats in one day? \

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x