Answer:

Step-by-step explanation:
Proportion:


substitute x = 15:

Answer:
y - 3 = ⁵/₂(x - 2) {the point-slope form of the equation}
y = ⁵/₂x - 2 {the slope-intercept form of the equation}
5x - 2y = 4 {the standard form of the equation}
Step-by-step explanation:
The point-slope form of equation is: y - y₀ = m(x - x₀), where (x₀, y₀) is any point the line passes through and m is the slope.
m = ⁵/₂
(2, 3) ⇒ x₀ = 2, y₀ = 3
So, the point-slope form of the equation:
y - 3 = ⁵/₂(x - 2)
Therefore:
y - 3 = ⁵/₂x - 5 {add 3 to both sides}
y = ⁵/₂x - 2 ← the slope-intercept form of the equation
-⁵/₂x + y = - 2 {multiply both sides by (-2)}
5x - 2y = 4 ← the standard form of the equation
Answer:
( y + 9 ) = -10( x - 1 )
Step-by-step explanation:
First we calculate the slope

Then we choose a point it could be (1,-9) or (-10,101), I choose (1,-9), the slope point form is (y-y1)=m(x-x1)
( y - (-9) ) = -10( x - 1 )
( y + 9 ) = -10( x - 1 )
it could be also...
( y - 101 )= -10( x- (-10) )
( y - 101 ) = -10( x + 10 )
Answer:
40%
Step-by-step explanation:
Number of blocks shaded = 2
Total blocks = 5
Percentage: 2 ÷ 5 × 100
= 40 %