Step-by-step explanation:
the general slope intercept form is
y = ax + b
a is the slope, b is the y-intercept (when x=0).
1.
is already defined
y = -2x + 6
2.
the slope is expressed as ratio y/x indicating how many units y changes, when x changes a certain amount of units when going from one point to another.
(-3, -5) and (2, 5).
x changes by +5 units (from -3 to 2), y changes by +10 units (from -5 to +5).
so, the slope is 10/5 = 2
that gives us the first part of the equation :
y = 2x + b
we get b by using the coordinates of one of the points as x and y. e.g. (2, 5)
5 = 2×2 + b = 4 + b
1 = b
so, the full line equation is
y = 2x + 1
Answer:

Step-by-step explanation:
we have

This is the equation of a vertical parabola open upward (because the leading coefficient is positive)
The vertex is a minimum
The equation of a vertical parabola into vertex form is

where
(h,k) is the vertex of the parabola
Convert the equation into vertex form
Move the constant term to the left side

Complete the square


Rewrite as perfect squares

therefore

The vertex is the point (-1,-6)
75% of 340 is 85 so 85 laptops were sold at Best Bargin
Answer:
answer is in the sbs explanation
Step-by-step explanation:
1.5625