Predict:
y=20
x=35
predict for x=40

X is left and right

hmm
see the aproximate slope
see endpoints
ok, so from about (0,3) to (35,30)
slpoe is 27/35

so
y=(27/35)x+3 about
so when x=
ok, so according to the garph, when x=35, y=30, not 20

ok, so when x=40

y=(27/35)x+3
y=(27/35)*40+3
y=33.8571 about for x=40