Question

Anyone please thank you

Answer 1

Answer: y=7x-50

Explanation:

`(0,-50)\ \ \ \ (10,20)\\y=kx+b\\\displaystyle\\k=(y_2-y_1)/(x_2-x_1) \\\\x_1=0\ \ \ \ x_2=10\ \ \ \ y_1=-50\ \ \ \ y_2=20\\\\k=(20-(-50))/(10-0) \\\\k=(20+50)/(10)\\k=-(70)/(10)\\\\k=(7*10)/(10) \\\\k=7 \\Hence,\ \\y=7x+b \ \ \ \ (0,-50)\\\\-50=7*0+b\\-50=0+b\\-50=b\\Thus,\\y=7x-50`

Answer 2

y=8x-50

Explanation:

y-int(when x=0):(0, -50)

(10, 30)

m=(y2-y1)/(x2-x1)

m=(-50-30)/(0-10)

m=-80/(-10)

m=8

y=8x+b

-50=8(0)+b

b=-50

y=8x-50