Answer:slope = 3
y - intercept = ( 0 , -24)
Explanation:
The equation of a line in slope- intercept form is given as :
y = mx + c
Where m is the slope and c is the y - intercept.
What we need to do is to write the equation given in this form ,that is
y + 3 = 3 ( x - 7 )
Expanding the R.H.S , we have
y + 3 = 3x - 21
subtract 3 from both sides
y = 3x - 21 - 3
y = 3x - 24
comparing this with the formula , we have
slope = 3
y - intercept = ( 0 , -24)