2-4 Writing Linear Equations
Write an equation in slope-intercept form for
3. passes through (3, 5); m = –2
the line described.
SOLUTION:
Substitute m = –2 and (x, y) = (3, 5) in the equation y
1. slope 1.5, passes through (0, 5)
= mx + b.
SOLUTION:
Substitute m = 1.5 and (x, y) = (0, 5) in the equation y
= mx + b.
Substitute m = –2 and b = 11 in the equation
Substitute m = 1.5 and b = 5 in the equation
y = mx + b.
y = mx + b.
y = –2x + 11
4. passes through (–8, –2);
2. passes through (–2, 3) and (0, 1)
SOLUTION:
SOLUTION:
Substitute m =
and (x, y) = (–8, –2) in the
Substitute
and
in
equation y = mx + b.
the slope formula
.
and b = 18 in the equation
Substitute m =
Substitute m = –1 and
in the point
slope form
.
y = mx + b.
5. MULTIPLE CHOICE Which is an equation of the
line?
3. passes through (3, 5); m = –2
SOLUTION:
Substitute m = –2 and (x, y) = (3, 5) in the equation y
= mx + b.
eSolutions Manual - Powered by Cognero
Page 1
A
Substitute m = –2 and b = 11 in the equation