Question

What is the y-intercept of a line that has a slope of –3 and passes through point (0, –7)?

A. -7
B. –3
C. 0
D. 4

Answer 1

A) - 7

slope -intercept form y = - 3x - 7

slope m =-3 and y - intercept c = -7

Explanation:

Explanation:-

Given that slope 'm' = -3 and point (0,-7)

The equation of the straight line passing through the point and having slope 'm'

y - y₁ = m ( x- x₁)

The equation of the straight line passing through the point ( 0,-7) and slope m = -3

y - (-7) = -3 ( x -0)

y +7 = -3x

3x +y + 7=0

The equation of the line 3x +y + 7=0

Final answer:-

slope -intercept form y = - 3x - 7

slope m =-3 and y - intercept c = -7