Answer:D
Step-by-step explanation:
z is directly proportional to x: z = kx.
If z is directly proportional to x and inversely proportional to y, then z = Kx/y.
When x= 6 and y = 6, z is 12. Find the constant of proportionality, K:
12 = K(6/6), or K = 12
Then, in general, z = 12x/y.
What is z when x=13 and y=10? z = 12(13)/(10) = 15.6 (answer)
Answer:
y - 7 = -8(x - 1)
Step-by-step explanation:
We are provided with some information
We are given point (1,7)
Slope = -8
Using a point slope form formula
y - y_1 = m (x - x_1)
m = -8
y_1 = 7
x_1 = 1
Inserting the given values into the equation
y - y_1 = m ( x - x_1)
y - 7 = -8 ( x - 1) ( point slope form)
Don't confuse slope intercept form with point slope form
Slope intercept form
y = mx + C
y - point y
m - slope
x - point x
C - intercept
Point slope form
y - y_1 = m(x - x_1)
