Answer:
y = -x + 15
Step-by-step explanation:
if an item is priced at $9 per item then 6 items are sold.
Thus, the input is 9 while the output is 6.
Thus, we can say; x, y = (9, 6)
4 items are sold for $11 per item. Thus, the coordinate is; (11, 4)
Now,slope is;
m = (y2 - y1)/(x2 - x1)
m = (4 - 6)/(11 - 9)
m = -2/2
m = -1
We know that slope intercept form is;
y = mx + c
Let's try the first point.
Thus;
6 = -1(9) + c
6 + 9 = c
c = 15
Thus, equation of line is;
y = -x + 15
The second pair because the ratios between the sides are equal
Answer:
2 or maybe 1
Step-by-step explanation:
there is angle then side (line) and then another angle.
Answer:
Part 1) The equation for the monthly charges for Runfast is
and for BA&D is ![y=4x+15](https://tex.z-dn.net/?f=y%3D4x%2B15)
Part 2) The solution of the system of equations is the point (1.75.22)
Step-by-step explanation:
Let
x -----> the number of gig of data
y -----> the total monthly charges
we know that
<em>Runfast Company</em>
-----> equation A
<em>BA&D Company</em>
-----> equation B
Part 2) Use your mathematical skill to solve this system of equations using the substitution method
we have
-----> equation A
-----> equation B
Substitute equation B in equation A and solve for x
![4x+15=8x+8](https://tex.z-dn.net/?f=4x%2B15%3D8x%2B8)
![8x-4x=15-8](https://tex.z-dn.net/?f=8x-4x%3D15-8)
![4x=7](https://tex.z-dn.net/?f=4x%3D7)
![x=1.75\ Gb](https://tex.z-dn.net/?f=x%3D1.75%5C%20Gb)
Find the value of y
![y=8(1.75)+8=\$22](https://tex.z-dn.net/?f=y%3D8%281.75%29%2B8%3D%5C%2422)
so
The solution is the point (1.75.22)
That means
For the number of gig equal to 1.75 the monthly charge is equal to $22 in both company's
therefore
For a number of gigs less than 1.75 the company Runfast has the better pricing, while for a number of gigs greater than 1.75 the company BA&D has the better pricing
All of the following are acute angles.