Answer:
Step-by-step explanation:
18). Graph represent a function
19). Graph does not represent a function
Answer:
slope = 3
Step-by-step explanation:
Calculate the slope m using the slope formula
m = 
with (x₁, y₁ ) = (4, 9) and (x₂, y₂ ) = (7, 18)
m = 
= 
= 3
Answer:
x=-2, y=5. (-2, 5).
Step-by-step explanation:
2x+9y=41
-4x+y=13
---------------
2(2x+9y)=2(41)
-4x+y=13
-----------------------
4x+18y=82
-4x+y=13
------------------
19y=95
y=95/19
y=5
2x+9(5)=41
2x+45=41
2x=41-45
2x=-4
x=-4/2=-2
In other words, what's the unit rate, the price per 1 yard of fabric?
$13
--------- = ($13 / 20 yd), or $0.65 / yd
20 yd
