A) i) - 1 + 2 + -3 = -2
ii) 4 - 9 = -5
b) i) xy
ii) y * y+1 ??
3) $28 bc, 18+10= 1/3 of the money bc he already spent 2/3 so 28 is the answer
Answer:
3,0
Step-by-step explanation:
The x-intercept is 3,0 because the line crosses the x-axis at point 3,0
to vertically compress a function, f(x) by a factor of d, we multiply the whole function by d, so f(x) becomes d*f(x)
to shift a function to the right by c units, subtract c from every x
so f(x) becomes f(x-c)
to shift a function up by c units, add c to the whole function
so f(x) becomes f(x)+c
ok, given f(x)=5x
vertically compress by 1/4, multiply whole thing by 1/4
![f(x)=\frac{5}{4}x](https://tex.z-dn.net/?f=f%28x%29%3D%5Cfrac%7B5%7D%7B4%7Dx)
shift right 3 units, minus 3 from every x
![f(x)=\frac{5}{4}(x-3)](https://tex.z-dn.net/?f=f%28x%29%3D%5Cfrac%7B5%7D%7B4%7D%28x-3%29)
shift up 2 units so add 2 to whole function
![f(x)=\frac{5}{4}(x-3)+2](https://tex.z-dn.net/?f=f%28x%29%3D%5Cfrac%7B5%7D%7B4%7D%28x-3%29%2B2)
if you expand it you get
![f(x)=\frac{5}{4}x-\frac{7}{4}](https://tex.z-dn.net/?f=f%28x%29%3D%5Cfrac%7B5%7D%7B4%7Dx-%5Cfrac%7B7%7D%7B4%7D)