I don't know this question will u help

Step-by-step explanation:

It is one

f(x)=(2/3)x+(4/3)

Step-by-step explanation:

find gradient,m

(4-2)/4-1)=2/3

m=2/3

find y intercept

(4-c)/(4-0)

c=4/3

y=mx+c

f(x)=(2x3)x+(4/3)

linear

step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10