Answer:
3/4 of a foot will cost $2.25.
Step-by-step explanation:
This question is solved by rule of three, due to proportions.
One foot of lace costs 3 dollars. How much is 3/4 of a foot going to cost?
1 foot - 3 dollars
3/4 foot - x dollars

So
3/4 of a foot will cost $2.25.
put x=0 then y=4
put y=0 then x=-4
therefore 2 ccordintes are
(0,4) and (-4,0)
take a scale and construct a line joining these two points.
you will get the required graph.
hope it helps.
please follow if you like.
For the 1st one we need to solve x. x-y=2 step1: x-y+y=2+y answer: x=y+2
Answer:
97.5
Step-by-step explanation:
Cross multiply
2 * x = 2x
15 * 13 = 195
2x = 195
2x/2 = 195/2
x = 97.5
[RevyBreeze]