34.54 units / 59.66 units / 23.236 units / 26.376 units / 13.188 units / 29.83 units.
circumferances

answer:

Step-by-step explanation:

The answers to your questions are

a) (18/7,5/7)

b) (9,10)

Step-by-step explanation:

This can be determined by using various methods i.e substitution... , or eliminations method (just look those up) BUT

This question specifically askes you to do the problem using the graphing method... in other words for "a" graph y = 3x-7 and x+2y = 4

on the same graph paper , and determine where the lines cross... for "B" graph y=x+2 and y=2x+7..

I will do my best to graph the lines using demos

Technically the answer sked for is this chart 9see graphic #3)

so the answer is where the y values are the same

thus answer is (X. where the y's are the same)

xy1y2

-34-8

-25-6

180

07-2

180

292

3104

4116

5128

61310

71412

81514

91616

101718

111820

121922

132024

142126

152228

162330

172432

182534

192636

202738