y = - 
x - 34
the equation of a line in slope-intercept form is
y = mx + c ( m is the slope and c the y-intercept )
to calculate m use the gradient formula
m = ( y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (- 68, 0 ) and (x₂, y₂ ) = (0, - 34 )
m = 
= 
= -
the y-intercept = (0, - 34 ) ⇒ c = - 34
y= - x - 34
Answer:
d = 5
Step-by-step explanation:
-2(3-d)=4
-6+2d=4
2d=10
d=5
2*4=8
8/5=1.6
1.6miles:12minutes
60/12=5
5*1.6=8
Blake's avg. speed is 8mph
There exists the same question from other source that has the image of the drawing. Attached to this answer is the image.
To solve this, first we have to assume ratios.
Real Height / Shadow = 56 / 49
Real Height / 28 = 56 / 49
49 * h = 56 * 28
49h = 1568
Then, we have to divide both sides by 9
h = 32
Therefore, the obelisk is 32 ft
C is correct answer to this question.
