Observe the graph; the line is passing through (4, 3) and (7, -2).
The line equation in slope-intercept form is
, where m is the slope and b is
the y-intercept.
\First find the slope (m).
\Slope formulae is 
(Replace
with 4, 3, 7 and -2)
(Subtract:
)
(Subtract:
)
Slope is 
Next find the y-intercept (b).
\
(Substitute
for m)
(Substitute 4, 3 for x and y)
(Multiply:
)
(Add
to each side)
(Apply Commutative property:
)
(Apply Additive inverse property:
)
(Apply Additive identity property:
)
(Add:
)
Substitute
for m and
for bin the Slope-intercept form equation

The equation in slope-intercept form is
.