Question

What is the y-intercept of a line that has a slope of 3 and passes through point (–1, –7)?
–10
–4
3
7

Answer 1

Answer: -4

Step-by-step explanation:

Let the equation be : y=mx+c

where m= slope = 3

c= constant

Hence the given eqn can be writen as :

y=3x+c

Since the line pass through (-1,-7)

Therefore -7 = 3*(-1) + c

In solving we get c= -4

Therefore the final eqn of line is

y = 3x - 4

For Y - intercept x=0

y=3*0-4 => y = -4 [ANSWER]