Answer:
Option (C)
Explanation:
Slope-intercept form of an equation is,
y = mx + b
Here, m = slope of the line
b = y-intercept
By comparing this equation with the equations given in the options,
Option (1)
y = 3.5x
Slope of the line 'm' = 3.5
y-intercept 'b' = 0
Slope and y-intercept both are positive.
Option (2)
y =
m =
b = 7
Both are positive.
Option (3)
y = 7.5x - 2
m = 7.5
b = -2
Therefore, slope of the line is positive and y-intercept is negative.
Option (4)
y = -5x - 8
m = -5
b = -8
Therefore, slope and y-intercept both are negative.
Option (C) is the correct option.