5/49(x)<span> = 20/7
5x/49 = 20/7
</span>5x/49 × 49 = 20/7 <span>× 49
</span>5x = 140
5x / 5 <span> = 140 / 5
</span>x = 28
Answer:
A) y = 3x – 2
Step-by-step explanation:
Just check the results: when you put the numbers of the x-colum from the table, the result will be the corresponding numbers of the y-colum. and that means this is the right equation
Oh really? That’s tough bud
First find the slope, m:
2-(-1) 3
m = -------------- = --------- = 6/7
(1/2)-(-3) 3.5
Now use the slope-intercept formula:
y = mx + b
Choosing the point (1/2, 2), 2 = (6/7)(1/2) + b. Find b (the y-intercept):
14 [ 2 = (6/7)(1/2) + b ] => 28 = 6 + 14b.
Then 22 = 14b, and b = 22/14.
Then the eqn of the line is y = (6/7)X + 22/14
Mult. all terms by 14 to remove the fractions:
14y = 12x + 22
Finally, rearrange the terms: -12x + 14y - 22 = 0. This is the eqn in standard form, as requested.
Even though its irregular its still an octagon. Therefore, it will still have 8 sides.
