Question

Find an equation of the line with the slope m= - 8 that passes through the point (-3,-6). Write the equation in the form Ax +By = C.

Choose the correct answer below.
A. 8x +y = 30
B. 30x +y = - 8
C. 8x+y = - 30
D. 30x +y = 8

Answer 1

C. 8x + y = -30

Explanation:

-6 = -8[-3] + b

24

-30 = b

y = -8x - 30

+8x +8x

___________

8x + y = -30 >> Standard Linear Equation

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Answer 2

Explanation:

note : an equation is : y - b = m(x - a) ... the point is : A ( a , b) and slope : m

in this exercice : m= - 8 and a= - 3 and b= -6

an equation is : y+6 = -8(x+3)

you can write : y+6 = - 8x -24

8x+y = - 30 .....answer : C