Line passes through (0, −3) and (4, 5)
-3
y = 3x − 4
Find slope and yint
m = 3
b = −4
Slope = 2, y-intercept = 1
Answer: (1,3)
Each hour, temperature rises 3°.
Slope =
Answer: 3
Line passes through (2, 1) and slope is 3
-5
y = −2x + 1.5
m = −2
b = 1.5
Slope = −3, y-intercept = −2
Answer: (1, −5)
Water drops 1.5 feet per minute.
-1.5
Slope = −2, passes through (−1, 4)
2
2y = 6x − 8
slope=3
yint=-4
Slope = 3/4, y-intercept = −1
Answer: (4, 2)
Starts at 10 gallons, loses 2 gallons per hour.
y=-2x+10
Slope = 3/4, passes through (8, −2)
−8
y − 3 = −4(x + 2)
y = −4x − 5
m = −4
b = −5
Slope = −2/3, y-intercept = 4
Answer: (3, 2)
Starts at −4 feet, rises 3/2 feet per second
y=3/2x -4
Slope = −1/2, passes through (−6, 1/2)
−5/2
3x + 2y = −10
y = −3/2x − 5
m = −3/2
b = −5
Slope = −5/2, y-intercept = 3
Answer: (2, −2)
Line passes through origin and (−4, 10)
Slope= −5/2