Substitute -1 for the variable x.
f(-1) = 2(-1) - 2
f(-1) = -2 - 2
f(-1) = -4
Answer:
Equation of line: y = ![\frac{2}{5}x](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7Dx)
Step-by-step explanation:
So we have to calculate the slope. The formula is ![\frac{y_{2}-y_{1} }{x_{2}-x_{1} }](https://tex.z-dn.net/?f=%5Cfrac%7By_%7B2%7D-y_%7B1%7D%20%20%7D%7Bx_%7B2%7D-x_%7B1%7D%20%20%7D)
Slope =
=
=
= ![\frac{2}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7D)
We then need to calculate the Y-intercept.
The formula is
y - 200 =
(x - 500)
y - 200 =
x - 200
Add 200 to both sides
y = ![\frac{2}{5}x](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7Dx)
There y-intercept is 0 which is the origin (0,0)
3/10 is a rational number, but sqrt(10) is not (it's irrational).
Thus, the sum of these two quantities is also irrational.
3/10 + sqrt(10) cannot be simplified further.
However, you could express both in decimal fraction notation and obtain the approx. sum:
0.3 + 3.162 = 3.462 (approx)
Can I have an image of the graph?