Answer:
The answer for #13 should be y= -2x+3
The answer for #14 should be y= 1/2x+10
The answer for #15 should be y= -1/10x+70
The answer for #16 should be y= 1/2x-6
The answer for #17 should be y= 5x+2
And the answer for #18 should be y= 12x+7
Hope I helped :)
Explanation: