Answer: C
Step-by-step explanation:
Find Slope first
![m=\frac{y2-y1}{x2-x1}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7By2-y1%7D%7Bx2-x1%7D)
![m=\frac{2-.5}{3-1}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7B2-.5%7D%7B3-1%7D)
![m=1.5/2\\m=3/4](https://tex.z-dn.net/?f=m%3D1.5%2F2%5C%5Cm%3D3%2F4)
Slope is 3/4
Chose a point to put in point slope form
(1,1/2)
y − y1 = m(x − x1)
![y-\frac{1}{2} =\frac{3}{4} (x-1)](https://tex.z-dn.net/?f=y-%5Cfrac%7B1%7D%7B2%7D%20%3D%5Cfrac%7B3%7D%7B4%7D%20%28x-1%29)
![y-\frac{1}{2} = \frac{3}{4}x-\frac{3}{4}](https://tex.z-dn.net/?f=y-%5Cfrac%7B1%7D%7B2%7D%20%3D%20%5Cfrac%7B3%7D%7B4%7Dx-%5Cfrac%7B3%7D%7B4%7D)
add 1/2 to both side
Yes because you can multiply 3/4 by 9/9 and you’ll get 27/36 :)
The least common denominator of 10 and 15 is 30. It's easiest to use trial and error to find the LCD. In this case, just multiply both numbers by 2 and see if that works. Since 15 doesn't go into 20, I tried multiplying 15 by 2 instead, and got 30, which is divisible by 2. If that doesn't work, move on to multiplying them by 3, then 4 four, and so on. However, in this case, it did work, so, since you multiplied 15 by two to get 30, multiply 7 by two to get the fraction 14/30. Then, since you multiplied 10 by 3 to get 30, multiply 2 by 3 to get 6/30. Then, add the two together to get 20/30 and simplify the fraction to 2/3.
2/10 + 7/15 Given.
6/30 + 14/30 LCD.
20/30 Add.
2/3 Simplify.
Answer:
f(-3)=9
Step-by-step explanation:
We want to find what f(x), or y is, when x is equal to -3.
f(x)=x^2
We want to find f(-3). Therefore, we can substitute -3 in for x.
f(-3)=(-3)^2
Evaluate the exponent. -3^2 is the same as -3*-3.
f(-3)=-3*-3
f(-3)=9