Answer:
slope = 40
Step-by-step explanation:
Calculate the slope m using the slope formula
m = 
with (x₁, y₁ ) = (2, 80) and (x₂, y₂ ) = (4, 160) ← 2 points on the line
m =
=
=
= 40
Answer:
a)15:6 b)2:3
Step-by-step explanation:
No. of used books=15-9=6
a) 15:6
b)
6:9
2:3
Answer:
f(
)=2x+1
Step-by-step explanation:
given f(x)=-4x+1................(1)
x=
put in equ (1)
f(x)=-4x+1
f(
) =-4(
)+1
f(
)=2x+1 answer