Question

3. A line passes through (9. -9) and (10,-5).

a. Write an equation for the line in point-slope form.
b. Rewrite the equation in standard form using integers.
y-9= 4(x-9); -4x + y = 45
y+9= 4(x-9); -4x+y = -45
y-9= 4(x +9); -4x+y = 45
y+9= 4(x +9); -4x+y = -45

Answer 1

Explanation:

a. y-y1/y2-y1=x-x1/x2-x1

y+9/-5+9=x-9/10-9

y+9/4=x-9/1

y+9/4=x-9

b. y+9=4(x-9)

y+9=4x-45

y-4x=-45-9

y-4x=-54