Answers

1. Step-by-step explanation:

   1) x-y=3

   sub two values

   x=7,8

   y=4,5

   slope=rise/run=8-7/5-4

   =1/1=1

   2)7x-y=-3

   x=1,2

   y=10,17

   rise/run=17-10/2-1

   =7

   3)4x+y=2

   x=1,2

   y=-2,-6

   slope=-4/1

   =-4

   4) x-y=3

   x=4,5

   y=1,2

   slope=2-1/5-4=1/1

   =1

   by subbing two values we can calculate the graduliant/slope from two random variables

   use literally any two numbers as x

   sub in calculate y

   and calculate the slope from rise/run

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