Answer:
-9
Step-by-step explanation:
The answer is -9 because you always take away a nine for ex 47-9 is 38
Answer:
the first question: y = x -10
the second question: y = 1/2 x - 3/2
Step-by-step explanation:
for the second equation:
1. x = 2y + 3
2. x - 3 = 2y
3. divide 2 on the whole equation
4. 1/2x - 3/2 = y
4. put it in slope-intercept form: y = 1/2x - 3/2
Answer:
A
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = 
with (x₁, y₁ ) = (- 3, 0 ) and (x₂, y₂ ) = (0, - 2 ) ← 2 points on the line
m = 
= 
= - 
The line crosses the y- axis at (0, - 2 ) ⇒ c = - 2
f(x) = - x - 2 ← function rule
Answer:
cos x = 8/f.
Step-by-step explanation:
We can use the identity :
tan x = sin x / cos x.
Substituting:
e/8 = e/f / cos x
e/8 * cos x = e/f
cos x = e/f * 8/e
cos x = 8e / fe
cos x = 8/f.
Answer:
5$??.
Step-by-step explanation:
If a magazine was 5$, 25-5= 20. So then, 20÷4= 5. There fore an eraser costs 5$.
