Answer:
A vertical stretch of f(x) by a scale factor of a is
g(x)=a f(x)
Step-by-step explanation:
Answer:
$66.24
Step-by-step explanation:
TIP:
55.20 x 0.15 = 8.28
TAX:
55.20 x 0.05 = 2.76
Answer:
55.20 + 8.28 + 2.76 = 66.24
(Also always tip your server 20% unless they were bad)
Answer:
y-intercept is y= -4.5+28 slope is 4.5
Step-by-step explanation:
18x+4y=112
-18x -18x
4y=112-18x
-----------------
4
y= -4.5x+28
Answer:
22
Step-by-step explanation:
The line where it says 2cm, extend that line to the top. You know have 2 triangles, call the one on the left A and the one on the right B
area of recntangle = bh
Rect A:
b = 5
h = 4 - 2
h = 2
bh = 5 x 2
bh = 10
Rect B:
b = 3
h = 4
bh = 4 X 3
bh = 12
Total = 10 + 12
Total = 22
First question:
1. Set equations equal to each other so 5x-9=2x+6
2. Put x's on one side so that 3x=15
3. Divide by 3 so that x=15
4. Substitute 15 in for x so that y=2(15)+6
5. Solve for y so that y=36
6. Thus the equations intersect at (15,36)
Second question:
1. Since for lines y=mx+b, and m=slope=3 you only need to write an equation with slope 3
2. y=3x+b, b can be any number
