Verified Answer :

Ckaranja

y=mx+c
Gradient, m= \(\frac{change in y}{change in x}\)
m=\(\frac{15-7}{5-1}\)
m=\(\frac{8}{4}\)
m=2
y=mx+c
y=2x+c 
replacing for x and y using point (1,7)
7=2(1)+c
7=2+c
c=5
y=2x+5

chelseaaac

Answer:

f(x)=2x+5 :)

\i got it right on my test

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