Answer:
A. 2x-4
Step-by-step explanation:
Let his brother's age be
.
Derrick is 4 years younger than twice his brother's age. Which means derrick is 4 years younger than
.
Which makes derricks age
since he is 4 years younger
Answer:
$170 Feet
Step-by-step explanation:
It is very long process
Answer & Step-by-step explanation:
In order to find the y-intercept of this equation, we must turn this equation into a slope-intercept equation. The equation for slope-intercept form is <em>y=mx+b. </em>We can do this by using these steps. Our goal is to get y by itself on one side.
6x - 2y - 9 = 0
Step 1: Add 9 on both sides of the equation.
6x - 2y = 9
Step 2: Subtract 6x on both sides of the equation. Once you subtract, make sure you put the -6x in front of 9 so we are following the rules of variables and exponents.
-2y = -6x + 9
Step 3: Divide -2 on both sides of the equation.
y = 3x - 
So, the y-intercept is -
4.44 because 40 divided by 9 is 4.44