Answer:
Step-by-step explanation:
<u>Proportional relationship formula is:</u>
a) Use point (1, 3.5) to find k:
b)<u> Unit rate is:</u>
c) <u>Point (8, 28) indicates:</u>
- Water level of 28 cm after 8 min
d) <u>x = 20, y =?</u>
Answer:
5/3 or 1.666
Step-by-step explanation:
m is 5/3 or 1.66 as a decimal
m=((y2-y1):(x2-x1))
Answer:
(1,5)
Step-by-step explanation:
The solution to the system of equations is where the two graphs intersect.
The two lines intersect at x=1 and y =5
The point of intersection is (1,5)
Answer:
vertex is: (4,-9)
y intercept= (0,7)
roots= (1,0) and (7,0)
Step-by-step explanation:
so we can use factoring to solve this quadratic equation real quick:
x^2-7x-1x+7
x(x-7)
-1(x-7)
(x-1)(x-7)=0
x-1=0
x=1
x-7=0
x=7
(1,0) and (7,0) are the roots
axis of symmetry: 8/2=4
substitute axsis of symmetry in equation to get vertex:
4^2-8(4)+7
16-32+7
-16+7=-9
vertex is: (4,-9)
y intercept= (0,7)
roots= (1,0) and (7,0)
Hope this helps
Answer:
x=2
Step-by-step explanation:
-x+5=-11x+25
add +x on both sides -11x+x =-10x
-10x+25=5
subtract 25 on both sides
you get -10x=-20
x=2