X -<span> length of a leg
1/2*x</span> - <span>length of the base
so:
and
</span>
1/2*x</span> - <span>length of the base
so:
and
</span>
A car is 180 inches long. A truck is 75% longer than the car. How long is the truck?
2 answers:
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Answer:
y = - x + 3
Step-by-step explanation:
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 ) = (- 10, 17) and (x₂, y₂ ) = (5, - 4)
m = =
= -
y = - x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equation
using (5, - 4), then
- 4 = - 7 + c ⇒ c = - 4 + 7 = 3
y = - x + 3 ← in slope-intercept form