Answer:
f(x) = (x - 9)(x + 2) = x^2 - 7x - 18
Step-by-step explanation:
If the x-intercepts are -2 and 9, then the factors of this quadratic are (x + 2) and (x - 9). Multiplying these two factors together, we get:
f(x) = (x - 9)(x + 2) = x^2 - 9x + 2x -18, or
f(x) = (x - 9)(x + 2) = x^2 - 7x - 18
I would say factoring. I mean study everything youve learned, but when I took algebra, factoring was one of the biggesf units along with word problems
Answer:
The answer is 235
Step-by-step explanation:
it's just basic long divistion.
0.62x = 9.3
x = 9.3 / 0.62
x = 15 <== ur number
Answer:
![2](https://tex.z-dn.net/?f=2)
Step-by-step explanation:
For this I would find two friendly points like (60,10) and (70,30). Now we will plug in for the slope-intercept formula
.
So...
![y_2=30\\y_1=10\\x_2=70\\x_1=60](https://tex.z-dn.net/?f=y_2%3D30%5C%5Cy_1%3D10%5C%5Cx_2%3D70%5C%5Cx_1%3D60)
Now we plug in and solve...
![m=\frac{y_2-y_1}{x_2-x_1}\\m=\frac{30-10}{70-60}\\m=\frac{20}{10}\\m=\frac{2}{1}=2](https://tex.z-dn.net/?f=m%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%5C%5Cm%3D%5Cfrac%7B30-10%7D%7B70-60%7D%5C%5Cm%3D%5Cfrac%7B20%7D%7B10%7D%5C%5Cm%3D%5Cfrac%7B2%7D%7B1%7D%3D2)
So the slope will be 2.