(6 + 5x)(7x + 3) = 42x + 18 + 35x^2 + 15x = 35x^2 + 57x + 18
Nine is in the tenths place
Answer:
f⁻¹(7) = 1
Step-by-step explanation:
Step 1: Write out function
f(x) = 3x + 4
Step 2: Find f⁻¹(x) (or known as inverse f(x))
y = 3x + 4
x = 3y + 4
-3y + x = 4
-3y = 4 - x
y = -4/3 + x/3
Step 3: Plug in 7 into inverse f(x)
f⁻¹(7) = 7/3 - 4/3
f⁻¹(7) = 3/3
f⁻¹(7) = 1
Answer:
The line passing through points (1,4) and (4,3).
The line passing through points (1,-4) and (4,-5).
Step-by-step explanation:
Since the equation is y=3x+1
If it was perpendicular, it means the slope would be the negative reciprocal.
So the slope would be -1/3
9-8/6-3=1/3 (not negative) <u>No</u>
3-4/4-1=-1/3 <u>Yes</u>
-5+4/4-1=-1/3 <u>Yes</u>
6-3/5-4= 3/1 <u>No</u>
