Question

Joel is making a scarf. The ratio of knit stitches is 2 and purl stitches is 7. Based on the ratio, how many purl stitches are there if there are 8 knit stitches?

Answer 1

h(x) = x/4

Explanation:

to find the inverse of a function, exchange x and y and then solve for y

y = 4x

exchange x and y

x = 4y

solve for y

divide each side by 4

x/4 = 4y/4

y = x/4

the inverse is

h(x) = x/4

Answer 2

knit:purl

2:7

x4 x4

8:28