Answer:
Step-by-step explanation:
lets find out 9 times ? = 72
to do this, simply divide: 72/9 = 8
Since the end product is a negative and the factor is a negative, 8 will be a positive number
-9 times 8 equals -72
hope this helped ;)
Answer:
slope = -3/4
using the formula
y -y1 = m(x -x1)
y -1 = -3/4(x -(-8))
y -1 = -3/4(x +8)
cross multiply
4(y -1) = -3(x +8)
4y -4 = -3x -24
4y = -3x -24 +4
4y = -3x -20
divide both sides by 4
y = -3/4 x -5 (equation of the line)
Step-by-step explanation:
Given
Two similar triangles i.e. 
from the figure, In 
Also, In 
Answer: B 0.5 kWh per day
Step-by-step explanation:
Since the graph represents the function where electricity usage in kilowatts per hour of a clock radio varies directly with the number of days it is plugged into the wall current
The constant of variations will be the gradient ( slope ) of the graph.
Gradient = (Y2 - Y1)/(X2 - X1)
Where X1 = 2, X2 = 6, Y1 = 0.5, Y2 = 1.5
Substitute all the values into the formula
Gradient = (1.5 - 0.5)/( 6 - 4 )
Gradient = 1/2
Gradient = 0.5.
Therefore, a reasonable estimate of the constant of variation is 0.5 kWh per day
Answer: This table is a relation because the x- intercepts repeat itself, -2 and -2, a in order for this table to be a function the x- intercept cannot repeat.
