Answer:
9x^2-3x+4
Step-by-step explanation:
(3x^2+2x^2-5x+7)+(4x^2+2x-3)
5x^2-5x+7+4x^2+2x-3
5x^2+4x^2-5x+2x+7-3
9x^2-3x+7-3
9x^2-3x+4
I think you forgot to add a photo
The first graph is what i would think
Answer:
C.) Y= 5/8x + 1 1/2
Step-by-step explanation:
To write the equation of a line, calculate the slope between points (4,4) and (-4,-1). After, substitute the slope and a point into the point slope form.
![m = \frac{y_2-y_1}{x_2-x_1} = \frac{4--1}{4--4}= \frac{5}{8}](https://tex.z-dn.net/?f=m%20%3D%20%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%20%3D%20%5Cfrac%7B4--1%7D%7B4--4%7D%3D%20%5Cfrac%7B5%7D%7B8%7D)
Substitute m = 5/8 and the point (4,4) into the point slope form.
![y - y_1 = m(x-x_1)\\y -4 = \frac{5}{8}(x-4)\\y-4 = \frac{5}{8}x - \frac{20}{8} \\\y = \frac{5}{8}x - 2{1}{2} + 4 \\ y = \frac{5}{8}x + 1\frac{1}{2}](https://tex.z-dn.net/?f=y%20-%20y_1%20%3D%20m%28x-x_1%29%5C%5Cy%20-4%20%3D%20%5Cfrac%7B5%7D%7B8%7D%28x-4%29%5C%5Cy-4%20%3D%20%5Cfrac%7B5%7D%7B8%7Dx%20-%20%5Cfrac%7B20%7D%7B8%7D%20%5C%5C%5Cy%20%3D%20%5Cfrac%7B5%7D%7B8%7Dx%20-%202%7B1%7D%7B2%7D%20%2B%204%20%5C%5C%20y%20%3D%20%5Cfrac%7B5%7D%7B8%7Dx%20%2B%201%5Cfrac%7B1%7D%7B2%7D)