You can do these questions by substitution
for the example1
y=3x+1
you need to find a number which is suitable for x and y
when x=1
y=3(1)+1
y=4
so (1,4) is on located on the equation
when x= -1
y=3(-1)+1
y=-2
so(-1,-2) is located on the equation
and now use a ruler to line up (1,4)and(-1,-2)
and that is the equation
Turn your paper 90 degrees to the left, this will make the y-axis the x-axis and the x-axis the y- axis. Now list the coordinates of the points
Answer:
13divided by 7
Step-by-step explanation:

Answer:
(1.2. - 4.7)
Step-by-step explanation:
On a coordinate plane, a line is drawn from point A to point B. Point A is at (7,-2) and point B is at (-8,-9).
Now, it is asked the x- and y-coordinates of point C, which partitions the directed line segment from A to B into the ratio 5:8.
So, the coordinates of point C are
![[\frac{5 \times (- 8) + 8 \times 7}{5 + 8}, \frac{5 \times (- 9) + 8 \times (- 2)}{5 + 8}]](https://tex.z-dn.net/?f=%5B%5Cfrac%7B5%20%5Ctimes%20%28-%208%29%20%2B%208%20%5Ctimes%207%7D%7B5%20%2B%208%7D%2C%20%5Cfrac%7B5%20%5Ctimes%20%28-%209%29%20%2B%208%20%5Ctimes%20%28-%202%29%7D%7B5%20%2B%208%7D%5D)
= ![[\frac{16}{13}, \frac{-61}{13}]](https://tex.z-dn.net/?f=%5B%5Cfrac%7B16%7D%7B13%7D%2C%20%5Cfrac%7B-61%7D%7B13%7D%5D)
= (1.2. - 4.7) (Answer)
{Round to the nearest tenth}
The answer would be B I hope this helps.